| Amino Acid | Quality | DMF / CEP | Production Site | Legal Status |
| L-Cysteine | Ph. Eur., USP | DMF, CEP | India | Rx / OTC |
| L-Cystine | Ph. Eur., USP | DMF, CEP | India | Rx / OTC |
| L-Tyrosine* | Ph. Eur., USP | India | Rx / OTC | |
| L-Leucine | Ph. Eur., USP | India | Rx | |
| L-Histidine | Ph. Eur. | India | Rx / OTC | |
| L-Arginine | Ph. Eur., USP | India | Rx | |
| N-Acetyl-L-Tyrosine* | Ph. Eur. | India | Rx | |
| * also available from non animal, non human (n.a.n.h) origin | ||||

