Comparison
Best L-Tryptophan 500 mg and L-Tryptophan 500 mg
Best L-Tryptophan 500 mg (Doctor's Best) lists 3 distinct ingredients and L-Tryptophan 500 mg (Advanced Nutrition by Zahler) 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 0.78.
| Ingredient | Best L-Tryptophan 500 mg | L-Tryptophan 500 mg |
|---|---|---|
| Niacin | 20 mg (125%) | 8.3 mg (52%) |
| Tryptophan | 500 mg | 500 mg |
| Vitamin B6 | 10 mg (588%) |
Amounts are per serving as DSLD gives them: Best L-Tryptophan 500 mg, 1 capsule; L-Tryptophan 500 mg, 1 capsule. Current labels entered September 2013 and April 2022. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Best L-Tryptophan 500 mgDoctor's Best: every row against all products listing it
- L-Tryptophan 500 mgAdvanced Nutrition by Zahler: every row against all products listing it