Comparison

No-Flush Niacin 400 mg and Flush Free Niacin

No-Flush Niacin 400 mg (CHK Nutrition) lists 2 distinct ingredients and Flush Free Niacin (Nature's Bounty) 2 (rows of one ingredient counted once); 2 are on both labels. On the site's similarity measure, which compares ingredient lists (1 for the same list, rarer ingredients counting for more; amounts are not part of it), the two formulas score 1.00: the same ingredients, at the amounts in the table below.

Amount per serving (and % of the Daily Value)
IngredientNo-Flush Niacin 400 mgFlush Free Niacin
Niacin400 mg (2500%)400 mg (2500%)
Inositol100 mg100 mg

Amounts are per serving as DSLD gives them: No-Flush Niacin 400 mg, 1 capsule; Flush Free Niacin, 1 capsule. Current labels entered June 2020 and December 2011. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own