Comparison
Amino 21 and Amino Day
Amino 21 (DaVinci Laboratories) lists 21 distinct ingredients and Amino Day (Source Naturals) 22 (rows of one ingredient counted once); 20 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 0.92.
| Ingredient | Amino 21 | Amino Day |
|---|---|---|
| Taurine | 75 mg | not disclosed |
| Leucine | 0.0225 g | not disclosed |
| Glutamine | 0.075 g | not disclosed |
| Valine | 0.015 g | not disclosed |
| Isoleucine | 0.0075 g | not disclosed |
| Tyrosine | 30 mg | not disclosed |
| Arginine | 22.5 mg | not disclosed |
| Lysine | 30 mg | not disclosed |
| Glycine | 45 mg | not disclosed |
| METHIONINE | 22.5 mg | not disclosed |
| Phenylalanine | 30 mg | not disclosed |
| Histidine | 7.5 mg | not disclosed |
| THREONINE | 15 mg | not disclosed |
| Glutamic Acid | 225 mg | not disclosed |
| Alanine | 15 mg | not disclosed |
| Cysteine | 22.5 mg | not disclosed |
| Aspartic Acid | 45 mg | not disclosed |
| Proline | 7.5 mg | not disclosed |
| Serine | 15 mg | not disclosed |
| Ornithine | 7.5 mg | not disclosed |
| Vitamin C | 45 mg (50%) | |
| Vitamin B6 | 15 mg (882%) | |
| Citrulline | 0.015 g |
Amounts are per serving as DSLD gives them: Amino 21, 1 capsule; Amino Day, 3 tablets. Current labels entered December 2024 and October 2022. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.