Table of Contents

Component Description

The objective of the dietary supplement component of the 24-hour dietary recall interviews is to obtain information from NHANES participants on the types and amounts of dietary supplements (DS) consumed during the 24-hour period prior to the interview (midnight to midnight). From 1999-2006, the dietary interviews only asked about food and beverages consumed. Beginning in 2007, data is now collected on the usage of all vitamins, minerals, herbals and other dietary supplements as well as non-prescription antacids, as part of the dietary interviews.

The continuous NHANES has been collecting data on study participants’ use of dietary supplements, in the past 30 days, during the Dietary Supplements Section (DSQ) in the household interview since 1999. However, prior to this data release, estimating total nutrient intakes from all sources (foods, beverages and DS), has been difficult because of the different data collection methods, referent time frames, and data formats. Now with these data collected using similar methods over the same time frame, nutrients from all sources can be easily combined. This will allow researchers to improve the total nutrient intake estimations as well as examine associations by nutrient source such as from foods versus supplements. The improved nutrient estimates will increase researchers’ ability to examine nutrient-disease or nutrient-health associations and to estimate percentages of the population with intakes over or under various nutrient standards.

All NHANES examinees are eligible for two 24-hour dietary recall interviews. The first dietary recall interview is collected in-person in the Mobile Examination Center (MEC) and the second interview is collected by telephone 3 to 10 days later.

Similar to the format of food intake files, two types of supplement intake data are available from 24-hour dietary interview for the 2007-2008 survey cycle: Individual Dietary Supplements files and Total Dietary Supplements files. Each dietary supplement data file is accompanied by a PDF file containing its documentation, codebook, and frequencies. The documentation section of the file for each of the two types of dietary supplement data files is identical.

24-hour Dietary Supplements Data Files: Four data files were produced from the dietary supplement component of the 24-hour dietary recall interviews: two Individual Dietary Supplements files and two Total Dietary Supplements files. Each file includes one day of intake data. The number “1” or “2” in the file name identifies the day (and mode) of the interview: 1 = first day (MEC), 2 = second day (phone). File names are the following:

File Names for 24-hour Dietary Supplements Data
File Day 1 Day 2
Individual Dietary Supplements File DS1IDS_E DS2IDS_E
Total Dietary Supplements DS1TOT_E DS2TOT_E

The nutrient amounts in these files reflect only nutrients obtained from non-prescription and prescription dietary supplements as well as non-prescription antacids that contain calcium and/or magnesium. They do not include nutrients obtained from foods, beverages, and water.

Individual Dietary Supplements File (DS1IDS_E and DS2IDS_E): Contain detailed information about the types and amounts of individual dietary supplements and non-prescription antacids (that contain calcium and/or magnesium) reported by each participant. The names for both Day 1 and Day 2 variables are listed in Appendix 1.

The Individual Dietary Supplements Files include, for each interview day, one record for each dietary supplement or antacid consumed by a survey participant. Only participants’ that had reported taking a dietary supplement or antacid are included in these files. Each dietary supplement or antacid is identified by a supplement ID number (DSDSUPID) and each record contains the information listed below: 

  • Number of days of complete intake obtained from participant 
  • Day of the week of the intake 
  • Name and ID number of the supplement 
  • Amount of dietary supplement consumed in serving size, which is calculated as the reported amount consumed divided by the serving size from the product label
  • Amounts of 33 nutrients/dietary components (listed in Appendix 2) from each dietary supplement and antacid, as calculated using the NHANES Dietary Supplement Database (NHANES-DSD)

This file only includes intake for a select group of nutrients. These records can be linked to the NHANES-DSD, using supplement ID numbers (DSDSUPID), to obtain more detailed information on reported products. The NHANES-DSD datasets provide information on nutrients in the dietary supplement as reported on the product label. Botanical ingredients would be an example of nutrients not released in the Individual Dietary Supplements files, but can be obtained from the NHANES-DSD files.

Total Dietary Supplements Files: (DS1TOT_E and DS2TOT_E): Contain, for each participant, daily total nutrient intakes from dietary supplements and antacids. The names for both Day 1 and Day 2 variables are listed in Appendix 3.

The Total Dietary Supplement Files provide a summary record of total nutrient intakes from dietary supplements and antacids for each individual. All participants that had a complete dietary interview for foods and beverages are included in this file. This includes users and non-users of supplements and antacids. Each total intake record contains the following information: 

  • Number of days of complete intake obtained from participant 
  • Whether a dietary supplement or an antacid was consumed in the past 24 hours 
  • Total number of supplements and antacids reported for that participant 
  • Daily aggregates of 33 nutrients/dietary components (listed in Appendix 2) from all supplements and antacids, as calculated using the NHANES-DSD. 

The 24-hour food dietary data are released in separate files available on the NHANES website. They can be linked to the dietary supplement files by the respondent sequence number (SEQN). 

 

Eligible Sample

All NHANES examinees are eligible for the dietary supplement component of the 24-hour dietary recall interview.

Protocol and Procedure

The examination protocol and data collection methods for the dietary interview are fully documented in the NHANES Dietary Interviewers Procedures Manuals (1, 2).

The 24-hour dietary supplement component was administered after the 24-hour dietary recall for food and beverage, using a similar protocol. All NHANES examinees responding to the food 24-hour dietary recall interview are eligible for the dietary supplement and non-prescription antacid use questions. Information was obtained on all vitamins, minerals, herbals, and other dietary supplements as well as non-prescription antacids that were consumed during a 24-hour time period (midnight to midnight), including the name and the amount of supplement taken. Non-prescription antacids were collected since a high percentage of these products contain calcium and/or magnesium. Participants’ were shown a hand card that lists examples of supplements (Appendix 4). For participants who reported taking a supplement or antacid in the last 30 days during the household interview, the supplements or antacids were imported from the household questionnaire. The Interviewer verified that each dietary supplement and non-prescription antacid reported during the household interview was consumed the day before the interview (midnight to midnight). Participants were also asked how much was taken. Then the interviewers collected any additional supplement or antacid that was taken that previous day that were not reported during the household interview.

Proxy interviews were conducted for survey participants less than six years of age. Assisted interviews were conducted with survey participants 6 to 11 years of age. Dietary interviews were conducted in English and Spanish. Translators were used to conduct interviews in other languages.

The in-person interview was conducted in a private room in the NHANES mobile examination center (MEC). Telephone dietary interviews were collected 3 to 10 days following the MEC dietary interview but not on the same day of the week as the MEC interview. Any participant who did not have a telephone was given a toll-free number to call so that the recall could be conducted.

Quality Assurance & Quality Control

All dietary interviewers were required to complete an intensive one-week training course and to conduct supervised practice interviews before working independently in the field. Retraining sessions were conducted annually to reinforce the proper protocols and technique.

Interviewers were monitored throughout the data collection period. Interviews were checked for completeness of the recalls, missing information, inconsistent reports, and unclear notes. Written notification and feedback were provided to the interviewers.

Trained nutritionists reviewed incoming data and matched reported dietary supplement entries to known supplements from the in-house NCHS Product Label Database (PLD) where possible; sought additional product labels if feasible; assigned generic or default supplements as appropriate; transferred or removed products that were not considered dietary supplement (i.e. prescription medication); and assigned matching codes/confidence codes to indicate the degree of matching certainty. All coding was reviewed by the NCHS project officer.

Data Processing and Editing

Matching reported dietary supplements to known products

Trained nutritionists, at NCHS, match the product names entered by the interviewer (including prescription dietary supplement, non-prescription dietary supplement and non-prescription antacid) to a known product when possible. NCHS nutritionists first determine if the product is in our in-house PLD. If it is, then the nutritionist verify whether the product label was entered into the system within the 2-year cycle of data collection. If the product label has not been entered into PLD, or the product label was entered before the beginning of the 2-year data collection cycle, NCHS nutritionists attempt to obtain a new product label. NCHS obtains labels for each dietary supplement or non-prescription antacid reported by participants from sources such as the manufacturer, distributor or retailer, the Internet, company catalogs, and the Physician’s Desk Reference (PDR). Nutritionists determine during processing whether or not the non-prescription antacids collected contain calcium and/or magnesium. Only non-prescription antacids containing calcium or magnesium are included in the present data files.

NCHS communicates with many major manufacturing company representatives to determine when various product re-formulations become available. Based upon manufacturer advice, we have used a lag time of 5 months after the new re-formulated product has hit the market and matched products to participants’ accordingly. Despite these precautions, there is no guarantee that the product taken by participants’ is matched to the correct formulation in our release files.

NCHS nutritionists attempt to find the exact product(s) reported by participants, however this is done with varying degrees of precision. A “confidence code” (DS1MTCH and DS2MTCH, located in files DS1IDS_E and DS2IDS_E, respectively) accompanies each record to indicate the degree of matching certainty. The matches are: 1) Exact or near exact match; 2) Probable match; 3) Generic match; 4) Reasonable match; or 5) Default match. In some cases no match can be made with any certainty. These products are coded as “6, No match”. Products whose names were reported as “Refused” (DSDSUPP=7777) or “Don’t know” (DSDSUPP=9999) have matching codes of 7 and 9, respectively.

NCHS created generic and default dietary supplements and non-prescription antacids, which are also maintained in the PLD database. Generics are created in the database when we have information about a reported supplement such as strength of all ingredients, i.e. one which had no brand name. These were generally single ingredient supplements which included a strength (e.g. vitamin C 500 mg) or multiple vitamins and/or mineral supplements made by a private label manufacturer that was known to us and for which we had a label with identical ingredients and strengths (e.g. brand X all-purpose multivitamin was reported, and we had a label for brand Y, made by the same manufacturer). When all ingredient strengths were not known, a default supplement was created in the database. Defaults were created for single ingredient and multiple ingredient supplements based on our own data of most frequently reported supplements of that type, based on the survey cycle in which the data was collected. Created default products and the actual products or strengths that were assigned to these defaults are listed in Appendix 5.

After the dietary supplement data is coded and matched to a product in our in-house database, various types of reviews were conducted to ensure the quality of the data. Interviewers’ comments are reviewed to ensure that they have been accounted for in coding. Decisions are made about how to code new or unusual dietary supplement products or unusual quantities or units reported by participants. Dietary supplements that could not be matched to items in the database are resolved by NCHS nutritionists.

Product information is released from the in-house PLD as the NHANES Dietary Supplement Database (NHANES-DSD) which contains detailed information on the dietary supplements and antacids reported by survey participants since NHANES 1999. The NHANES-DSD release consists of three datasets which contain information on products:
Dietary Supplement Product Information (DSPI)
Dietary Supplement Ingredient Information (DSII)
Dietary Supplement Blend Information (DSBI)
The supplement ID numbers (DSDSUPID) located in files DS1IDS_E and DS2IDS_E of this release can be used to merge with the NHANES-DSD files. For more information on the NHANES-DSD, please refer to the documentation and release files located on the NHANES website:
https://wwwn.cdc.gov/nchs/nhanes/search/datapage.aspx?Component=Questionnaire&CycleBeginYear=2007.

Specific variables and edits:

DSDSUPID: Supplement ID

Supplement ID is a 10-digit identifier assigned to each product entered into the PLD. All identifiable products have a supplement ID beginning with the number ‘1’. The next 3 digits (positions 2-4) are: ‘888’ if the supplement was created by NCHS as a generic or default product; otherwise the digits in positions 2-4 are coded ‘000’. The next 4 digits (positions 5-8) are sequentially assigned by the system for each product. The last 2 digits (positions 9-10) indicate formulations of the same supplement: the first formulation entered into the database = 00, the first re-formulation = 01, the next = 02, etc. Note that these are reformulations of the same product. Different versions of products (e.g. liquid vs. tablet, with iron vs. without iron, regular vs. high potency) are considered as different products thus have different 4 digit numbers in positions 5 to 8. When a product name was entered as “no product information available”, “refused” or “don’t know”, its ID number starts with a string of 6’s. The NHANES-DSD Dietary Supplement Product Information (DSPI) file contains the text name of the dietary supplement.

DS1ANTA (DS1IDS_E) and DS2ANTA (DS2IDS_E): variable indicates whether a product was a dietary supplement or non-prescription antacid

This variable indicates whether the product reported was a non-prescription antacids (code=1) or a dietary supplement (code=0).

DS1MTCH (DS1IDS_E) and DS2MTCH (DS2IDS_E): Match code/confidence code

Supplements are recorded during the dietary interview with varying degrees of accuracy and completeness. NCHS has created a system to specify how certain we are with matching a supplement recorded during the interview with the actual product label. Below describes how matches are made:

Exact or near exact match (DSDMTCH=1) indicates that this is the only product that could match this entry.

Probable match (DSDMTCH=2) indicates that the match is not exact, but knowledge of the company’s products strongly suggests that this is the only possible match choice. For example the entry may not specify strength or include words such as timed release, but no other options are available for this brand according to manufacturer or retailer information.

Generic match (DSDMTCH=3) indicates we had information on the strength for all ingredients, either a) as part of name (e.g. vitamin C 500 mg) or b) because the manufacturer is known and NCHS has an identical product made by this manufacturer for a different distributor or retailer. Thus the ingredients and amounts are considered to be accurate despite an exact brand match.

Reasonable match (DSDMTCH=4) indicates that the product name may be incomplete or could be complete but other products of this brand also start with these same words so this cannot be assured. In these cases, the entered name is matched to either: a) the most frequently reported of these products in the NHANES 2007-2008 data, if this could be determined; b) the best selling product by this company that matches the entered name; or c) the most basic product by this company, as assessed by label wording.

Default match (DSDMTCH=5) indicates that the exact product could not be obtained because the name was imprecise or the exact brand product could not be located and no generic could be assigned. In these cases, the entered product was matched to a created default product based upon: a) the most commonly reported strengths for single ingredients; b) the most commonly reported brands for major multiple ingredient products such as multivitamins and multivitamin/multiminerals for children, seniors, or adults, if available; or c) products manufactured by a large, private-label manufacturer.

Finally, a match codes of No match (DSDMTCH=6) indicates that no product could be found and there was not enough detail in the name to assign a generic or default match with any confidence. The words “no product information available” are listed as the product name (DSDSUPP).

Analysts should be aware that for default matches and matches that chose between several similarly named supplements, there is less certainty that the ingredients and ingredient amounts in the supplement assigned exactly match those in the supplement actually taken. Additionally, NCHS cannot guarantee in any case that the matched product was the exact product taken or even that any product actually was taken, as these data are self-reported.

DS1ACTSS (DS1IDS_E) and DS2ACTSS (DS2IDS_E): Reported serving size/label serving size

This variable was derived using the information from the 'Supplement Information' file (DSPI) of the NHANES-DSD and the participants’ reported amount taken. File  DSPI provids information on the serving size from the product label’s supplement facts panel for which the nutrient amounts were based on. The participant were asked to report the amount taken during the dietary interview. The reported amount taken was divided by the serving size amount from DSPI (variable DSDSERVQ). Prior to calculating, the data needed to be edited to standardize the unit the participant used to report the amount taken and the unit used in the product serving size label. For example, if a respondent reported taking 1 tablespoon of a supplement and the label serving size was 3 teaspoons, than the reported amount taken was edited as 3 teaspoons (1 tablespoon = 3 teaspoons). There were about 230 records in which data was edited. In most of the cases, using the alternative serving size (information available on some product labels), using simple conversions (i.e. teaspoons to tablespoons) or contacting the manufacturer for information on label serving size (i.e. actual amount for a “capful”) provided enough information to make clear edits. However, in some cases the reported amount taken was very different from the product label serving size. For example, the respondent may have reported 1 tablet, but the label serving size is 1 tablespoon. This was assumed to be an error in reporting or an interviewer data entry error. In these cases the serving size was assumed to be the label serving size. There were 10 records in which this occurred and the data was edited to the label serving size. Additionally, all records that were assigned as a default product were edited and the label serving size was assigned.

Nutient variables from Individual Dietary Supplements files, DS1IDS_E and DS2IDS_E

These variables are created by using files from the NHANES_DSD that contain information on the serving size and the quantity of each nutrient from the product label’s supplement facts panel. The participants reported amount taken is divided by the serving size from the label in order to determine the actual amount of nutrient consumed. For example, a participant may report taking one tablet, but the serving size amount is 2 tablets. Therefore, only half of the nutrients on the label are being consumed. The variables DS1ACTSS (Day 1) and DS2ACTSS (Day 2) indicate the actual amount of product that was consumed. The actual amount of product consumed is then multiplied by the ingredient amount for each dietary supplement or antacid. In the example above, 0.5 would be multiplied by each ingredient/nutrient, to estimate the nutrient intake.

DS1IFDFE (DS1IDS_E) and DS1IFDFE (DS2IDS_E): Folate, DFE (mcg)
Dietary Folate Equivalents (DFE) were calculated by using a conversion factor of 1.7. This conversion is based on recommendations set by the Institute of Medicines Dietary Reference Intakes.(3)

Nutient variables from Total Dietary Supplements files, DS1TOT_E and DS2TOT_E

These variables are created by adding up each nutrient for each participant from the Individual Dietary Supplements Files (DS1IDS_E and DS2IDS_E).

Analytic Notes

In some cases it may appear as though a participant reported the same dietary supplement more than once. There are a several reasons for these duplications. Participants’ may have reported different brand name dietary supplements which when collected had the same generic ingredient (i.e. 2 different brands of calcium, but calcium is collected generically with only the strength recorded) or the dietary supplement may have been different forms or dosages of the same product. There were a few cases where the respondent did report the exact same dietary supplement, with the same length of use, frequency of use or amount used. In these cases, since the interviewer recorded the dietary supplement separately, both mentions were retained in the file.

During the data editing process, outlier values were examined. When there was insufficient information to conclude that values were invalid, they were left in the data set. Analysts should examine the distribution of the data and consider whether or not it is appropriate to include or exclude extreme values in a given analysis.

Each Individual Dietary Supplement File (DS1IDS_E and DS2IDS_E) is comprised of dietary supplement and non-prescription antacid records. Only participants who reported taking a dietary supplement or non-prescription antacid are inlcuded in these files. For many survey participants, there are multiple records in each file. For each Total Dietary Supplements File (DS1TOT_E and DS2TOT_E), there is one record for each participant and includes the entire dietary interview sample. These files can be linked with other NHANES files by the respondent sequence number (SEQN).

Variable names: For data collected on both Day 1 and Day 2, variable names are differentiated by having the number “1” or “2” in the third position of the variable name to identify the collection day. For example, the calcium variable in the Individual Dietary Supplements File, which identifies the amount of calcium in each supplement reported by the participant, is named DS1ICALC in the Day 1 file and DS2ICALC in the Day 2 file. Appendices 1 and 3 list the Day 1 and Day 2 variable names for the Individual Dietary Supplements files and the Total Dietary Supplements files, respectively.

Names for the following variables are the same for both days in the Individual Dietary Supplements files and the Total Dietary Supplements files:

Variables with the Same Name for Both Days in the Dietary Supplements Files
Day 1 and Day 2 variable name Label
SEQN Respondent sequence number
WTDRD1 Dietary day one sample weight
WTDR2D Dietary two-day sample weight
DSDSUPID Supplement ID
DRDINT Number of days of intake

Number of days of intake: Because two days of data are included in the 2007-2008 release, a variable has been included to indicate the number of days of intake available for each participant. The variable name is DRDINT.

Dietary recall status code: A status code (DR1DRSTZ or DR2DRSTZ) is used in both the Individual Dietary Supplements and Total Dietary Supplements files to indicate the quality and completeness of a survey participant's response to the dietary recall section. These codes are based on the food 24-hour dietary recall interview data. The codes are the following: 1. reliable and met the minimum criteria, 2. Not reliable or did not meet the minimum criteria, 4. Reported consuming breast milk, and 5. Not done. Although there are four possible values, only codes 1 and 4 appear in the Individual Dietary Supplements Files. For more information on this variable, refer to the documentations accompanying the 24-hour dietary interview datasets for food and beverage intake on the NHANES website.

Sample weights for dietary intake data: The NHANES participants were selected on the basis of a national probability design. In order to increase the number of participants for specific demographic groups, a multi-stage, unequal probability of selection design was implemented. In 2007-2008, the NHANES oversamples African Americans, Mexican Americans, all Hispanics, low income persons, and persons 60 years and older. Sample weights are constructed that encompass the unequal probabilities of selection, as well as adjustments for non-participation by selected sample persons. In order to produce national, representative estimates, the appropriate sample weights must be used.

For the 2007-2008 NHANES, there were 12,943 persons selected; of these 9,762 were considered respondents to the MEC examination and data collection. However, only 9,255 of the MEC respondents provided complete dietary intakes for Day 1. Furthermore, of those providing the Day 1 data, only 7,838 provided complete dietary intakes for Day 2.

Most analyses of NHANES data use data collected in the MEC and the variable WTMEC2YR should be used for the sample weights. However, for the dietary data, different sample weights are recommended for analysis. Dietary supplements are collected as part of the dietary interview. Although attempts are made to schedule MEC exams uniformly throughout the week, proportionally more exams occur on weekend days than on weekdays. Because food intake can vary by day of the week, use of the MEC weights would disproportionately represent intakes on weekends.

A set of weights WTDRD1 is provided that should be used when an analysis uses the Day 1 dietary recall data (either alone or when Day 1 nutrient data are used in conjunction with MEC data). The set of weights WTDRD1 is applicable to the 9,255 respondents with Day 1 data. Day 1 weights were constructed by taking the MEC sample weights (WTMEC2YR) and further adjusting for (a) the additional non-response and (b) the differential allocation by day of the week for the dietary intake data collection. These Day 1 weights are more variable than the MEC weights, and the sample size is smaller, so estimated standard errors using Day 1 data and Day 1 weights are larger than standard errors for similar estimates based on MEC weights.

When analysis is based on both days of dietary intake, only 7,838 sample persons have valid data. The NHANES protocol requires an attempt to collect the second day of dietary data at least 3 days after the first day, but the actual number of days between the two interviews is variable. A set of adjusted weights, WTDR2D, is to be used only when analysis uses both Day 1 and Day 2 dietary data. This two-day weight was constructed for the 7,838 respondents by taking the Day 1 weights (WTDRD1) and further adjusting for (a) the additional non-response for the second recall and (b) for the proportion of weekend-weekday combinations of Day 1 and Day 2 recalls.

Note that all sample weights are person-level weights and each set of dietary weights should sum to the same population control total as the MEC weights (WTMEC2YR). Additional explanation of sample weights and appropriate uses are included in the NHANES Analytic Guidelines.  

References

Codebook and Frequencies

SEQN - Respondent sequence number

Variable Name:
SEQN
SAS Label:
Respondent sequence number
English Text:
Respondent sequence number.
Target:
Both males and females 0 YEARS - 150 YEARS

WTDRD1 - Dietary day one sample weight

Variable Name:
WTDRD1
SAS Label:
Dietary day one sample weight
English Text:
Dietary day one sample weight
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1774.8238555 to 272913.69757 Range of Values 5648 5648
. Missing 0 5648

WTDR2D - Dietary two-day sample weight

Variable Name:
WTDR2D
SAS Label:
Dietary two-day sample weight
English Text:
Dietary two-day sample weight
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1513.0983763 to 412700.89161 Range of Values 5648 5648
. Missing 0 5648

DR2DRSTZ - Dietary recall status

Variable Name:
DR2DRSTZ
SAS Label:
Dietary recall status
English Text:
Dietary recall status
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Reliable and met the minimum criteria 5633 5633
2 Not reliable or not met the minimum criteria 0 5633
4 Reported consuming breast-milk 15 5648
5 Not done 0 5648
. Missing 0 5648

DR2EXMER - Interviewer ID code

Variable Name:
DR2EXMER
SAS Label:
Interviewer ID code
English Text:
Interviewer ID code
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
11 to 95 Range of Values 5648 5648
. Missing 0 5648

DRDINT - Number of days of intake

Variable Name:
DRDINT
SAS Label:
Number of days of intake
English Text:
Indicates whether the sample person has intake data for one or two days.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Day 1 only 0 0
2 Day 1 and day 2 5648 5648
. Missing 0 5648

DR2DAY - Intake day of the week

Variable Name:
DR2DAY
SAS Label:
Intake day of the week
English Text:
Intake day of the week
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Sunday 1098 1098
2 Monday 1372 2470
3 Tuesday 1051 3521
4 Wednesday 1105 4626
5 Thursday 477 5103
6 Friday 390 5493
7 Saturday 155 5648
. Missing 0 5648

DS2LOC - Location supplement originally recorded

Variable Name:
DS2LOC
SAS Label:
Location supplement originally recorded
English Text:
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 HouseHold Interview 4395 4395
2 MEC Interview 619 5014
3 Phone Interview 630 5644
. Missing 4 5648

DR2LANG - Language respondent used mostly

Variable Name:
DR2LANG
SAS Label:
Language respondent used mostly
English Text:
The respondent spoke mostly:
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 English 5177 5177
2 Spanish 445 5622
3 English and Spanish 26 5648
4 Other 0 5648
. Missing 0 5648

DSDSUPID - NCHS Supplement ID

Variable Name:
DSDSUPID
SAS Label:
NCHS Supplement ID
English Text:
NCHS Supplement ID
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
NCHS Supplement ID Value was recorded 5648 5648
< blank > Missing 0 5648

DS2ANTA - Antacid containing calcium/magnesium

Variable Name:
DS2ANTA
SAS Label:
Antacid containing calcium/magnesium
English Text:
Antacid containing calcium/magnesium
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Non-antacid supplement 5456 5456
1 Antacid containing calcium and/or magnesium 192 5648
. Missing 0 5648

DS2MTCH - Matching code

Variable Name:
DS2MTCH
SAS Label:
Matching code
English Text:
Matching code
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Exact or near exact match 2637 2637
2 Probable match 210 2847
3 Generic match 1345 4192
4 Reasonable match 533 4725
5 Default match 856 5581
6 No match 65 5646
7 Refused 0 5646
9 Don't know 2 5648
. Missing 0 5648

DS2ACTSS - Reported serving size/label serving size

Variable Name:
DS2ACTSS
SAS Label:
Reported serving size/label serving size
English Text:
Reported serving size/label serving size
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 15 Range of Values 5546 5546
999 Don't know 3 5549
. Missing 99 5648

DS2IKCAL - Energy (kcal)

Variable Name:
DS2IKCAL
SAS Label:
Energy (kcal)
English Text:
Energy (kcal)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 347.1 Range of Values 1122 1122
. Missing 4526 5648

DS2IPROT - Protein (gm)

Variable Name:
DS2IPROT
SAS Label:
Protein (gm)
English Text:
Protein (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.0105 to 53.4 Range of Values 212 212
. Missing 5436 5648

DS2ICARB - Carbohydrate (gm)

Variable Name:
DS2ICARB
SAS Label:
Carbohydrate (gm)
English Text:
Carbohydrate (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 84 Range of Values 807 807
. Missing 4841 5648

DS2ISUGR - Total sugars (gm)

Variable Name:
DS2ISUGR
SAS Label:
Total sugars (gm)
English Text:
Total sugars (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 36 Range of Values 441 441
. Missing 5207 5648

DS2IFIBE - Dietary fiber (gm)

Variable Name:
DS2IFIBE
SAS Label:
Dietary fiber (gm)
English Text:
Dietary fiber (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.0693 to 36 Range of Values 178 178
. Missing 5470 5648

DS2ITFAT - Total fat (gm)

Variable Name:
DS2ITFAT
SAS Label:
Total fat (gm)
English Text:
Total fat (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.02 to 28 Range of Values 544 544
. Missing 5104 5648

DS2ISFAT - Total saturated fatty acids (gm)

Variable Name:
DS2ISFAT
SAS Label:
Total saturated fatty acids (gm)
English Text:
Total saturated fatty acids (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.1 to 4.005 Range of Values 221 221
. Missing 5427 5648

DS2IMFAT - Total monounsaturated fatty acids (gm)

Variable Name:
DS2IMFAT
SAS Label:
Total monounsaturated fatty acids (gm)
English Text:
Total monounsaturated fatty acids (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.01 to 5 Range of Values 121 121
. Missing 5527 5648

DS2IPFAT - Total polyunsaturated fatty acids (gm)

Variable Name:
DS2IPFAT
SAS Label:
Total polyunsaturated fatty acids (gm)
English Text:
Total polyunsaturated fatty acids (gm)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.25 to 20 Range of Values 240 240
. Missing 5408 5648

DS2ICHOL - Cholesterol (mg)

Variable Name:
DS2ICHOL
SAS Label:
Cholesterol (mg)
English Text:
Cholesterol (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.65 to 106.8 Range of Values 201 201
. Missing 5447 5648

DS2ILYCO - Lycopene (mcg)

Variable Name:
DS2ILYCO
SAS Label:
Lycopene (mcg)
English Text:
Lycopene (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
75 to 30000 Range of Values 855 855
. Missing 4793 5648

DS2ILZ - Lutein + zeaxanthin (mcg)

Variable Name:
DS2ILZ
SAS Label:
Lutein + zeaxanthin (mcg)
English Text:
Lutein + zeaxanthin (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
42.5 to 20000 Range of Values 800 800
. Missing 4848 5648

DS2IVB1 - Thiamin (Vitamin B1) (mg)

Variable Name:
DS2IVB1
SAS Label:
Thiamin (Vitamin B1) (mg)
English Text:
Thiamin (Vitamin B1) (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.0132 to 250 Range of Values 1768 1768
. Missing 3880 5648

DS2IVB2 - Riboflavin (Vitamin B2) (mg)

Variable Name:
DS2IVB2
SAS Label:
Riboflavin (Vitamin B2) (mg)
English Text:
Riboflavin (Vitamin B2) (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.0297 to 250 Range of Values 1781 1781
. Missing 3867 5648

DS2INIAC - Niacin (mg)

Variable Name:
DS2INIAC
SAS Label:
Niacin (mg)
English Text:
Niacin (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 2000 Range of Values 1811 1811
. Missing 3837 5648

DS2IVB6 - Vitamin B6 (mg)

Variable Name:
DS2IVB6
SAS Label:
Vitamin B6 (mg)
English Text:
Vitamin B6 (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 600 Range of Values 1981 1981
. Missing 3667 5648

DS2IFA - Folic acid (mcg)

Variable Name:
DS2IFA
SAS Label:
Folic acid (mcg)
English Text:
Folic acid (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 5000 Range of Values 1932 1932
. Missing 3716 5648

DS2IFDFE - Folate, DFE (mcg)

Variable Name:
DS2IFDFE
SAS Label:
Folate, DFE (mcg)
English Text:
Folate, DFE (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 8500 Range of Values 1932 1932
. Missing 3716 5648

DS2ICHL - Total choline (mg)

Variable Name:
DS2ICHL
SAS Label:
Total choline (mg)
English Text:
Total choline (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.00495 to 1000 Range of Values 390 390
. Missing 5258 5648

DS2IVB12 - Vitamin B12 (mcg)

Variable Name:
DS2IVB12
SAS Label:
Vitamin B12 (mcg)
English Text:
Vitamin B12 (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.01287 to 18000 Range of Values 2020 2020
. Missing 3628 5648

DS2IVC - Vitamin C (mg)

Variable Name:
DS2IVC
SAS Label:
Vitamin C (mg)
English Text:
Vitamin C (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.4587 to 8160 Range of Values 2356 2356
. Missing 3292 5648

DS2IVK - Vitamin K (mcg)

Variable Name:
DS2IVK
SAS Label:
Vitamin K (mcg)
English Text:
Vitamin K (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1.7 to 300 Range of Values 1080 1080
. Missing 4568 5648

DS2IVD - Vitamin D (D2 + D3) (mcg)

Variable Name:
DS2IVD
SAS Label:
Vitamin D (D2 + D3) (mcg)
English Text:
Vitamin D (D2 + D3) (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.5 to 1250 Range of Values 2237 2237
. Missing 3411 5648

DS2ICALC - Calcium (mg)

Variable Name:
DS2ICALC
SAS Label:
Calcium (mg)
English Text:
Calcium (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1.5 to 4000 Range of Values 2382 2382
. Missing 3266 5648

DS2IPHOS - Phosphorus (mg)

Variable Name:
DS2IPHOS
SAS Label:
Phosphorus (mg)
English Text:
Phosphorus (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.85 to 609 Range of Values 1001 1001
. Missing 4647 5648

DS2IMAGN - Magnesium (mg)

Variable Name:
DS2IMAGN
SAS Label:
Magnesium (mg)
English Text:
Magnesium (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 2000 Range of Values 1661 1661
. Missing 3987 5648

DS2IIRON - Iron (mg)

Variable Name:
DS2IIRON
SAS Label:
Iron (mg)
English Text:
Iron (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.0004 to 260 Range of Values 1145 1145
. Missing 4503 5648

DS2IZINC - Zinc (mg)

Variable Name:
DS2IZINC
SAS Label:
Zinc (mg)
English Text:
Zinc (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.03762 to 160 Range of Values 1786 1786
. Missing 3862 5648

DS2ICOPP - Copper (mg)

Variable Name:
DS2ICOPP
SAS Label:
Copper (mg)
English Text:
Copper (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.0002 to 16 Range of Values 1474 1474
. Missing 4174 5648

DS2ISODI - Sodium (mg)

Variable Name:
DS2ISODI
SAS Label:
Sodium (mg)
English Text:
Sodium (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 10000 Range of Values 515 515
. Missing 5133 5648

DS2IPOTA - Potassium (mg)

Variable Name:
DS2IPOTA
SAS Label:
Potassium (mg)
English Text:
Potassium (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 640.8 Range of Values 1083 1083
. Missing 4565 5648

DS2ISELE - Selenium (mcg)

Variable Name:
DS2ISELE
SAS Label:
Selenium (mcg)
English Text:
Selenium (mcg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 800 Range of Values 1198 1198
. Missing 4450 5648

DS2ICAFF - Caffeine (mg)

Variable Name:
DS2ICAFF
SAS Label:
Caffeine (mg)
English Text:
Caffeine (mg)
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
40 to 75 Range of Values 2 2
. Missing 5646 5648

Appendix 1. Variables in the Individual Dietary Supplements Files (DS1IDS_E and DS2IDS_E) by Position

Day 1 Name Day 2 Name Variable Label
(DS1IDS_E) (DS2IDS_E)
SEQN SEQN Respondent sequence number
WTDRD1 WTDRD1 Dietary day one sample weight
WTDR2D WTDR2D Dietary two-day sample weight
DR1DRSTZ DR2DRSTZ Dietary recall status
DR1EXMER DR2EXMER Interviewer ID code
DRDINT DRDINT Number of days of intake
DS1DAY DS2DAY Intake day of the week
DS1LOC DS2LOC Location supplement originally recorded
DR1LANG DR2LANG Language respondent used mostly
DSDSUPID DSDSUPID NCHS Supplement ID
DS1ANTA DS2ANTA Antacid containing calcium/magnesium
DS1MTCH     DS2MTCH     Match code/confidence code
DS1ACTSS DS2ACTSS Reported serving size/label serving size
DS1IKCAL DS2IKCAL Energy (kcal)
DS1IPROT DS2IPROT Protein (gm)
DS1ICARB DS2ICARB Carbohydrate (gm)
DS1ISUGR DS2ISUGR Total sugars (gm)
DS1IFIBE DS2IFIBE Dietary fiber (gm)
DS1ITFAT DS2ITFAT Total fat (gm)
DS1ISFAT DS2ISFAT Total saturated fatty acids (gm)
DS1IMFAT DS2IMFAT Total monounsaturated fatty acids (gm)
DS1IPFAT DS2IPFAT Total polyunsaturated fatty acids (gm)
DS1ICHOL DS2ICHOL Cholesterol (mg)
DS1ILYCO DS2ILYCO Lycopene (mcg)
DS1ILZ DS2ILZ Lutein + zeaxanthin (mcg)
DS1IVB1 DS2IVB1 Thiamin (Vitamin B1) (mg)
DS1IVB2 DS2IVB2 Riboflavin (Vitamin B2) (mg)
DS1INIAC DS2INIAC Niacin (mg)
DS1IVB6 DS2IVB6 Vitamin B6 (mg)
DS1IFA DS2IFA Folic acid (mcg)
DS1IFDFE DS2IFDFE Folate, DFE (mcg)
DS1ICHL DS2ICHL Total choline (mg)
DS1IVB12 DS2IVB12 Vitamin B12 (mcg)
DS1IVC DS2IVC Vitamin C (mg)
DS1IVK DS2IVK Vitamin K (mcg)
DS1IVD DS2IVD Vitamin D (D2 + D3) (mcg)
DS1ICALC DS2ICALC Calcium (mg)
DS1IPHOS DS2IPHOS Phosphorus (mg)
DS1IMAGN DS2IMAGN Magnesium (mg)
DS1IIRON DS2IIRON Iron (mg)
DS1IZINC DS2IZINC Zinc (mg)
DS1ICOPP DS2ICOPP Copper (mg)
DS1ISODI DS2ISODI Sodium (mg)
DS1IPOTA DS2IPOTA Potassium (mg)
DS1ISELE DS2ISELE Selenium (mcg)
DS1ICAFF DS2ICAFF Caffeine (mg)

Appendix 2. List of Nutrients/Food Components (Unit)

Energy and Macronutrients
Food energy (kcal) €
Protein (g) €
Carbohydrate (g) €
Fat, total (g) €
Alcohol (g)

Sugars, total (g) €
Dietary fiber, total (g) €
Water (moisture) (g)*

Saturated fatty acids, total (g) €
Monounsaturated fatty acids, total (g) €
Polyunsaturated fatty acids, total (g) €
Cholesterol (mg) €

Individual fatty acids:
4:0 (g)
6:0 (g)
8:0 (g)
10:0 (g)
12:0 (g)
14:0 (g)
16:0 (g)
18:0 (g)
16:1 (g)
18:1 (g)
20:1 (g)
22:1 (g)
18:2 (g)
18:3 (g)
18:4 (g)
20:4 (g)
20:5 n-3 (g)
22:5 n-3 (g)
22:6 n-3 (g)

Vitamins, Minerals, and Other Components Vitamin A as retinol activity equivalents (µg) ¥
Retinol (µg) ¥
Carotenoids:
Carotene, alpha (µg) ¥
Carotene, beta (µg) ¥
Cryptoxanthin, beta (µg) ¥
Lycopene (µg) €
Lutein + zeaxanthin (µg) €
Vitamin E as alpha-tocopherol (mg) ¥
Added vitamin E as alpha-tocopherol (mg)
Vitamin D (D2 + D3) (µg) €
Vitamin K as phylloquinone (µg) €
Vitamin C (mg) €
Thiamin (mg) €
Riboflavin (mg) €
Niacin (mg) €
Vitamin B-6 (mg) €
Folate, total (µg)
Folate as dietary folate equivalents (µg) €
Folic acid (µg) €
Food folate (µg)
Choline, total (mg) €
Vitamin B-12 (µg) €
Added vitamin B-12 (µg)

Calcium (mg) €
Iron (mg) €
Magnesium (mg) €
Phosphorus (mg) €
Potassium (mg) €
Sodium (mg) €
Zinc (mg) €
Copper (mg) €
Selenium (µg) €
Caffeine (mg) €
Theobromine (mg)

* Value reflects moisture present in all foods, beverages, and water consumed as a beverage (variables DR1IMOIS, DR2IMOIS, DR1TMOIS, DR2TMOIS)
€Indicates nutrients in which data is available for dietary supplements and non-prescription antacids containing calcium and/or magnesium
¥Indicates that data will be available in a later release cycle

Appendix 3. Variables in the Total Dietary Supplements Files (DS1TOT_E and DS2TOT_E) by Position

Day 1 Name Day 2 Name Variable Label
(DS1TOT_ E) (DS2TOT_ E)
SEQN SEQN Respondent sequence number
WTDRD1 WTDRD1 Dietary day one sample weight
WTDR2D WTDR2D Dietary two-day sample weight
DR1DRSTZ DR2DRSTZ Dietary recall status
DR1EXMER DR2EXMER Interviewer ID code
DRDINT DRDINT Number of days of intake
DS1DAY DS2DAY Intake day of the week
DR1LANG DR2LANG Language respondent used mostly
DR1MNRSP DR2MNRSP Main respondent for this interview
DR1HELPD DR2HELPD Helped in responding for this interview
DS1DS DS2DS Any Dietary Supplements taken in the past 24 hour?
DS1DSCNT DS2DSCNT Number of dietary supplements reported
DS1AN DS2AN Any Antacids Taken?
DS1ANCNT DS2ANCNT Number of Antacids Reported
DS1TKCAL DS2TKCAL Energy (kcal)
DS1TPROT DS2TPROT Protein (gm)
DS1TCARB DS2TCARB Carbohydrate (gm)
DS1TSUGR DS2TSUGR Total sugars (gm)
DS1TFIBE DS2TFIBE Dietary fiber (gm)
DS1TTFAT DS2TTFAT Total fat (gm)
DS1TSFAT DS2TSFAT Total saturated fatty acids (gm)
DS1TMFAT DS2TMFAT Total monounsaturated fatty acids (gm)
DS1TPFAT DS2TPFAT Total polyunsaturated fatty acids (gm)
DS1TCHOL DS2TCHOL Cholesterol (mg)
DS1TLYCO DS2TLYCO Lycopene (mcg)
DS1TLZ DS2TLZ Lutein + zeaxanthin (mcg)
DS1TVB1 DS2TVB1 Thiamin (Vitamin B1) (mg)
DS1TVB2 DS2TVB2 Riboflavin (Vitamin B2) (mg)
DS1TNIAC DS2TNIAC Niacin (mg)
DS1TVB6 DS2TVB6 Vitamin B6 (mg)
DS1TFA DS2TFA Folic acid (mcg)
DS1TFDFE DS2TFDFE Folate, DFE (mcg)
DS1TVB12  DS2TVB12 Vitamin B12 (mcg)
DS1TCHL DS2TCHL Total choline (mg)
DS1TVC DS2TVC Vitamin C (mg)
DS1TVK DS2TVK Vitamin K (mcg)
DS1TVD DS2TVD Vitamin D (D2 + D3) (mcg)
DS1TCALC DS2TCALC Calcium (mg)
DS1TPHOS DS2TPHOS Phosphorus (mg)
DS1TMAGN DS2TMAGN Magnesium (mg)
DS1TIRON DS2TIRON Iron (mg)
DS1TZINC DS2TZINC Zinc (mg)
DS1TCOPP DS2TCOPP Copper (mg)
DS1TSODI DS2TSODI Sodium (mg)
DS1TPOTA DS2TPOTA Potassium (mg)
DS1TSELE DS2TSELE Selenium (mcg)
DS1TCAFF DS2TCAFF Caffeine (mg)

Appendix 4: Dietary Supplement Handcard

VITAMINS

MINERALS

Calcium, Vitamin C, Calcium and Iron, Vitamin E, Magnesium, Zinc, Calcium plus Vitamin D
MULTI-VITAMIN--MULTI-MINERALS Flintstones, One a Day, Prenatals, Tri-Vi-Flor, B-Complex, Centrum
HERBALS AND BOTANICLAS Echinacea, Garlic, Saw Palmetto, Ginkgo, Ginseng
FIBER Metamucil, Fibercon, Benefiber
AMINO ACIDS Lysine, Methionine, Tryptophan
OTHERS Fish Oil, Chondrotin, Glucosamine

Appendix 5: Created Default Supplements and Antacids

Default Supplement Assigned Strength or Supplement Selection of Assigned Strength or Supplement Based On:
Acai 500 mg Commonly Available Strength
Aloe Vera Gel 25 mg Commonly Available Strength
Apple Cider Vinegar Tablets Sundown Naturals Apple Cider Vinegar Tablets Commonly Available Product
Balanced B 100 B-Complex Vitasmart Balanced B 100 B-Complex Commonly Available Product
B-Complex With Vitamin C Nature Made B-Complex With Vitamin C Commonly Available Product
Beta Carotene 25,000 IU Most Commonly Reported Strength
Biotin 1500 mcg Commonly Available Strength
Bitter Melon 450 mg Commonly Available Strength
Black Cohosh 40 mg Commonly Available Strength
Boswellin 250 mg Commonly Available Strength
Brewer's Yeast Nature's Life Brewer's Yeast 500 mg Commonly Available Product
Calcium 600 mg Most Commonly Reported Strength
Calcium & Magnesium Calcium 1000 mg, Magnesium 500 mg Commonly Available Strength
Calcium + D + K Viactiv 500 + D + K Calcium Plus Vitamins D And K Most Commonly Reported Product
Calcium + Vitamin D 200 IU Calcium 600 mg, Vitamin D 200 IU Commonly Available Strength
Calcium + Vitamin D 400 IU Calcium 630 mg, Vitamin D 400 IU Commonly Available Strength
Calcium + Vitamin D 500 IU Calcium 500 mg, Vitamin D 500 IU Commonly Available Strength
Calcium 1000 mg With Vitamin D Calcium 1000 mg, Vitamin D 400 IU Commonly Available Strength
Calcium 1200 mg + Magnesium Calcium 1200 mg, Magnesium 600 mg Commonly Available Strength
Calcium 250 mg With Vitamin D Calcium 250 mg, Vitamin D 125 IU Commonly Available Strength
Calcium 333 mg + Magnesium Calcium 333 mg, Magnesium 133 mg Commonly Available Strength
Calcium 500 mg + Magnesium Calcium 500 mg, Magnesium 250 mg Commonly Available Strength
Calcium 500 mg With Vitamin D Calcium 500 mg, Vitamin D 200 IU Most Commonly Reported Strength
Calcium 600 mg With Vitamin D Calcium 600 mg, Vitamin D 200 IU Most Commonly Reported Strength
Calcium 630 mg With Vitamin D Calcium 630 mg, Vitamin D 400 IU Commonly Available Strength
Calcium Magnesium & Zinc Vitasmart Calcium Magnesium & Zinc Commonly Available Product
Calcium With Vitamin D Calcium 600 mg, Vitamin D 200 IU Most Commonly Reported Strength
Cat’s Claw (Una De Gato) 300 mg Commonly Available Strength
Chewable Multivitamin With Fluoride Copley Chewable Multivitamin With Fluoride (1mg) Commonly Available Product
Children’s Multivitamin/Multimineral Flintstones Complete Children’s Multivitamin/Multimineral Most Commonly Reported Product
Choline And Inositol Choline 250 mg, Inositol 250 mg Commonly Available Strength
Chondroitin Sulfate 250 mg Commonly Available Strength
Chromium Picolinate Chromium 200 mcg Most Commonly Reported Strength
Cinnamon 1000 mg Commonly Available Strength
Cod Liver Oil Liquid Carlson Norwegian Cod Liver Oil Commonly Available Product
Cod Liver Oil Softgels Vitasmart Cod Liver Oil Softgels Commonly Available Product
Coenzyme Q-10 50 mg Commonly Available Strength
Collagen 400 mg Commonly Available Strength
Collagen & Vitamin C Collagen 500 mg, Vitamin C 500 mg Commonly Available Strength
Colostrum 480 mg Commonly Available Strength
Cranberry 300 mg Commonly Available Strength
Creatine Monohydrate 5000 mg (5 G) Most Commonly Reported Strength
Daily Multiple Vitamins Plus Iron Perrigo Daily Multiple Vitamins Plus Iron Commonly Available Product
DHEA 25 mg Commonly Available Strength
Dong Quai 250 mg Commonly Available Strength
Echinacea 400 mg Most Commonly Reported Strength
Essential Fatty Acids Softgels Now Omega 3-6-9 Essential Fatty Acids 1000 mg Commonly Available Product
Ester-C Your Life Ester-C 500 mg With Bioflavonoids Commonly Available Product
Evening Primrose Oil 500 mg Most Commonly Reported Strength
Fiber Capsules Metamucil Fiber Capsules Most Commonly Reported Product
Fiber Powder Metamucil Powder Coarse Milled Original Texture Unflavored Commonly Available Product
Fish Oil 1000 mg Most Commonly Reported Strength
Flax Seed Oil 1000 mg Most Commonly Reported Strength
Fluoride Tabs Sodium Fluoride 1.1 mg Commonly Available Strength
Folic Acid 400 mcg Most Commonly Reported Strength
Folic Acid, Vitamin B-6, And Vitamin B-12 Folgard Folic Acid, Vitamin B-6 and Vitamin B-12 Combination Commonly Available Product
Garlic 400 mg Commonly Available Strength
Ginkgo Biloba 60 mg Most Commonly Reported Strength
Ginseng 100 mg Most Commonly Reported Strength
Glucosamine 1000 mg Commonly Available Strength
Glucosamine & MSM Glucosamine 500 mg, MSM 500 mg Most Commonly Reported Strength
Glucosamine 1500 mg & Chondroitin Glucosamine 1500 mg, Chondroitin 1200 mg Commonly Available Strength
Glucosamine Chondroitin Glucosamine 500 mg, Chondroitin 400 mg Commonly Available Strength
Glucosamine Chondroitin & MSM Spring Valley Glucosamine Chondroitin Plus MSM Commonly Available Product
Goldenseal Root 250 mg Commonly Available Strength
Grapeseed Extract 150 mg Commonly Available Strength
Green Tea 315 mg Commonly Available Strength
Gummy Bear Multivitamin L'il Critters Gummy Vites Commonly Available Product
Hawthorn 565 mg Commonly Available Strength
Horse Chestnut 250 mg Commonly Available Strength
Iron 65 mg Most Commonly Reported Strength
Lactobacillus Acidophilus 10 mg Commonly Available Strength
L-Arginine 500 mg Commonly Available Strength
L-Carnitine 250 mg Commonly Available Strength
Lecithin 1200 mg Most Commonly Reported Strength
Liquid Bentonite 15 mL Commonly Available Strength
Liquid Chlorophyll Nature's Way Chlorofresh Liquid Chlorophyll Commonly Available Product
Liquid Fish Oil Carlson Fish Oil Omega-3's DHA & EPA Commonly Available Product
Liquid Flaxseed Oil Omega Nutrition Hi-Lignan Flax Oil Commonly Available Product
Liquid Vitamin B-12 500 mcg Commonly Available Strength
L-Ornintine 500 mg Commonly Available Strength
Lutein 20 mg Commonly Available Strength
Lycopene 5 mg Commonly Available Strength
Lysine 500 mg Most Commonly Reported Strength
Maca 500 mg Commonly Available Strength
Magnesium 250 mg Most Commonly Reported Strength
Magnesium & Zinc Puritan's Pride Magnesium With Zinc Commonly Available Product
Memory Formula Focus Factor Commonly Available Product
Men’s Multivitamin/Multimineral One A Day Men’s Health Formula Most Commonly Reported Product
Milk Thistle 140 mg Commonly Available Strength
MSM 1000 mg Most Commonly Reported Strength
Multimineral Twinlab Multimineral Caps Commonly Available Product
Multivitamin / Multimineral Centrum Multivitamin / Multimineral Most Commonly Reported Product
Multivitamin And Fluoride Drops Enfamil Poly-Vi-Flor 0.25 mg Multivitamin And Fluoride Drops Commonly Available Product
Multivitamin Multimineral Pack Equaline Daily Vitamin Packets Commonly Available Product
Multivitamin Plus Iron The Medicine Shoppe Daily Multiple Vitamins Plus Iron Commonly Available Product
Niacin (Vitamin B-3) 500 mg Most Commonly Reported Strength
Noni 400 mg Commonly Available Strength
Nopal Cactus (Prickly Pear) 400 mg Commonly Available Strength
Olive Oil Softgels 500 mg Commonly Available Strength
Omega 3 Carlson Super Omega-3 Fish Oil Concentrate 500 mg Commonly Available Product
Papaya Enzyme Nature's Bounty Original Papaya Enzyme Commonly Available Product
Pediatric Iron Drops Fer-In-Sol Iron Drops Commonly Available Product
Polyvitamin And Fluoride Chewable Tablets Enfamil Poly-Vi-Flor 0.25 mg Multivitamin And Fluoride Chewable Tablets Commonly Available Product
Poly-Vitamin Drops Enfamil Poly-Vi-Sol Vitamin Drops Commonly Available Product
Potassium 99 mg Most Commonly Reported Strength
Prenatal Vitamins Stuart Prenatal Vitamins Commonly Available Product
Probiotic Shaklee Bifidus & Acidophilus Optiflora Probiotic Complex Commonly Available Product
Protein Powder GNC Pro Performance 100% Whey Protein Commonly Available Product
Psyllium Fiber Metamucil Powder Coarse Milled Original Texture Unflavored Commonly Available Product
Pumpkin Seed Oil 1000 mg Commonly Available Strength
Pycnogenol 50 mg Commonly Available Strength
Red Yeast Rice 600 mg Commonly Available Strength
Royal Jelly Nature's Bounty Premium Gold Royal Jelly 500 Mg Commonly Available Product
Salmon Oil Puritan's Pride Salmon Oil 1000 Mg Commonly Available Product
Sam-E 200 mg Commonly Available Strength
Saw Palmetto 160 mg Commonly Available Strength
Selenium 200 mcg Most Commonly Reported Strength
Senior Multivitamin / Multimineral Centrum Silver Multivitamin / Multimineral Most Commonly Reported Product
Shark Cartilage 500 mg Commonly Available Strength
Sodium Fluoride Drops Teva Sodium Fluoride Drops Rx Only (0.25 mg) Commonly Available Product
St. John’s Wort 300 mg Most Commonly Reported Strength
Super B-Complex Nature Made Super B-Complex Commonly Available Product
Teen’s Multivitamin GNC Teens Mega Teen Multivitamin Commonly Available Product
Turmeric 500 mg Commonly Available Strength
Vitamin A 10,000 IU Most Commonly Reported Strength
Vitamin A & D Vitamin A 5000 IU, Vitamin D 400 IU Commonly Available Strength
Vitamin B-1 (Thiamin) 100 mg Most Commonly Reported Strength
Vitamin B-12 500 mcg Most Commonly Reported Strength
Vitamin B-6 100 mg Most Commonly Reported Strength
Vitamin B-Complex Member’s Mark Vitamin B Complex Commonly Available Product
Vitamin C 500 mg Most Commonly Reported Strength
Vitamin C 500 mg With Bioflavonoids Your Life Ester-C 500 mg With Bioflavonoids Commonly Available Product
Vitamin D 400 IU Most Commonly Reported Strength
Vitamin E 400 IU Most Commonly Reported Strength
Vitamins C & E Vitamin C 500 mg, Vitamin E 400 IU Commonly Available Strength
Wereke 500 mg Commonly Available Strength
Whey Protein GNC Pro Performance 100% Whey Protein Commonly Available Product
Women's Multivitamin / Multimineral One A Day Women's Multivitamin / Multimineral Most Commonly Reported Product
Women's Ultra Multivitamin/Multimineral Caplets GNC Women's Ultra Mega Caplets Commonly Available Product
Zinc 50 mg Most Commonly Reported Strength
Default Antacid Antacid Assigned Selection of Assigned Antacid Based On:
Default Antacid Anti-Gas Liquid Mylanta Regular Strength Antacid Anti-Gas Liquid Commonly Available Product
Default Antacid Liquid Maalox Antacid Liquid Commonly Available Product
Default Calcium and Magnesium Antacid Tablets Rolaids Original Antacid Commonly Available Product
Default Calcium Antacid Tums Regular Strength Commonly Available Product