Comparison
L-Tryptophan and L-Tryptophan
L-Tryptophan (Douglas Laboratories) lists 2 distinct ingredients and L-Tryptophan (Metabolic Maintenance) 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.
| Ingredient | L-Tryptophan | L-Tryptophan |
|---|---|---|
| Vitamin B6 | 6.7 mg (394%) | 10 mg (588%) |
| Tryptophan | 1 mg | 500 mg |
Amounts are per serving as DSLD gives them: L-Tryptophan, 2 vegetarian capsules; L-Tryptophan, 1 capsule. Current labels entered April 2021 and August 2013. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- L-TryptophanDouglas Laboratories: every row against all products listing it
- L-TryptophanMetabolic Maintenance: every row against all products listing it