Vitamin · Supplement ingredient
Niacin
Niacin is listed on 9,288 U.S. supplement product labels in the NIH DSLD, #27 of 4,614 by label frequency.
- 9,288
- Products
- #27 of 4,614
- By frequency
- NIH
- Dosing fact sheet
Vitamin B3 (Niacin) dosing reference
NIH ODS Fact Sheet →- Recommended Dietary Allowance (RDA / AI)
- 16 mg NE for adult men, 14 mg NE for adult women
- Tolerable Upper Intake Level (UL)
- 35 mg per day for adults (applies to nicotinic acid and nicotinamide forms in supplements/fortification)
- Unit conversion
- 1 mg NE (Niacin Equivalent) = 1 mg niacin = 60 mg dietary tryptophan.
- Drug interactions
- High doses of nicotinic acid (1,000+ mg) used to treat dyslipidemia can cause flushing, liver toxicity, and interact with statins.
- Pregnancy & lactation
- RDA during pregnancy is 18 mg NE; lactation 17 mg NE.
Statement required by FDA: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Consult a licensed healthcare provider before starting, stopping, or combining any supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.
Source: https://ods.od.nih.gov/factsheets/Niacin-HealthProfessional/
How common is Niacin?
Number of supplement labels listing Niacin vs nearby vitamin ingredients
- Vitamin C
Vitamin C
19,514 products
- Vitamin E
Vitamin E
13,826 products
- Vitamin D
Vitamin D
13,343 products
- Vitamin B12
Vitamin B12
11,614 products
- Vitamin B6
Vitamin B6
10,881 products
- Niacin
Niacin
9,288 products
Products containing Niacin
Nearby Ingredients in Vitamin
Other ingredients in the Vitamin category cataloged in the NIH DSLD. Useful for comparing how common different nutrients are across the US supplement market.
Nationwide ingredients with similar DSLD presence
Two peer sets for Niacin: closest on total DSLD label listings (9,288 here) and closest on distinct brands that list it (1,368 here). Peers exclude the same DSLD category, and rows stay link-disjoint so each axis is a distinct neighborhood.
Similar label frequency
Nearest other ingredients by distinct DSLD product labels (floored at ≥50), outside this category.
Similar brand breadth
Nearest other ingredients by distinct brands listing them (floored at ≥100 brands), distinct from the label-frequency row.
Frequently asked about Niacin
What is the Recommended Dietary Allowance (RDA) for Vitamin B3 (Niacin)? ▼
Is there an upper limit for Vitamin B3 (Niacin)? ▼
How are Vitamin B3 (Niacin) units measured? ▼
Does Vitamin B3 (Niacin) interact with medications? ▼
What about Vitamin B3 (Niacin) during pregnancy or breastfeeding? ▼
How many supplement products contain Niacin? ▼
Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD) · Dosing reference: NIH ODS Vitamin B3 (Niacin) Health Professional Fact Sheet. Regulatory reference: Source: Dietary Supplement Health and Education Act (DSHEA), 1994, 21 U.S.C. § 321(ff).
Disclaimer, Not Medical Advice: Information on this page is based on manufacturer-declared label data and is provided for educational and reference purposes only. It does not constitute medical, nutritional, or health advice. Consult a licensed healthcare provider before starting, stopping, or combining any supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.
Read our methodology , how this data is sourced, computed, and verified.
Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. Ingredient figures are computed directly from the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.