Comparison

5-HTP 50 mg and L-5-HTP 100 mg

5-HTP 50 mg (H&B Holland & Barrett) lists 5 distinct ingredients and L-5-HTP 100 mg (Vitamin Discount Center) 4 (rows of one ingredient counted once); 3 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 0.70.

Amount per serving (and % of the Daily Value)
Ingredient5-HTP 50 mgL-5-HTP 100 mg
Vitamin B65 mg (294%)25 mg (1471%)
5-HTP50 mg100 mg
Griffonia250 mg102 mg
Vitamin C250 mg (278%)
Magnesium25 mg (6%)
Niacin5 mg (31%)

Amounts are per serving as DSLD gives them: 5-HTP 50 mg, 1 capsule; L-5-HTP 100 mg, 1 capsule. Current labels entered January 2025 and October 2023. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own

  • 5-HTP 50 mgH&B Holland & Barrett: every row against all products listing it
  • L-5-HTP 100 mgVitamin Discount Center: every row against all products listing it