Supplements
Start with the official reference figure, then compare labels. Cells marked "to be verified" have not yet been read on the source.
General information only, not medical advice. Ask a doctor or pharmacist before starting a supplement, especially if you are pregnant, take medicines or have a health condition.
Daily Values
The FDA publishes one reference figure, the Daily Value, for each nutrient. It is the figure behind the %DV printed on Supplement Facts labels. Source: FDA, Daily Value on the Nutrition and Supplement Facts Labels, content current as of March 5, 2024. Amounts by age, sex and pregnancy, and upper limits, are in the NIH fact sheets linked in the table.
| Ingredient | FDA Daily Value | NIH fact sheet |
|---|---|---|
| Vitamin A | 900 mcg RAE | NIH ODS |
| Vitamin B6 | 1.7 mg | NIH ODS |
| Vitamin B12 | 2.4 mcg | NIH ODS |
| Vitamin C | 90 mg | NIH ODS |
| Vitamin D | 20 mcg | NIH ODS |
| Vitamin E | 15 mg alpha-tocopherol | NIH ODS |
| Vitamin K | 120 mcg | NIH ODS |
| Folate | 400 mcg DFE | NIH ODS |
| Calcium | 1300 mg | NIH ODS |
| Iron | 18 mg | NIH ODS |
| Magnesium | 420 mg | NIH ODS |
| Zinc | 11 mg | NIH ODS |
| Potassium | 4700 mg | NIH ODS |
| Selenium | 55 mcg | NIH ODS |
| Iodine | 150 mcg | NIH ODS |
| Whey protein | 50 g (FDA nutrient: protein) | to be verified |
| Omega-3 | none listed by the FDA | NIH ODS |
| Taurine | none listed by the FDA | to be verified |
| Creatine | none listed by the FDA | to be verified |
Comparisons
- Vitamin D supplements compared
- Vitamin B12 supplements compared
- Magnesium supplements compared
- Zinc supplements compared
- Vitamin C supplements compared
- Iron supplements compared
- Calcium supplements compared
- Vitamin A supplements compared
- Vitamin E supplements compared
- Vitamin K supplements compared
- Folate and folic acid supplements compared
- Vitamin B6 supplements compared
- Potassium supplements compared
- Selenium supplements compared
- Iodine supplements compared
More comparisons appear as each product's label is read on the maker's page.