glutathione with l cysteine philippines KB White 1000mg Capsules x 60 | L-Glutamic Acid + L-Glycine + L- + NAC Skin Care Line | Trinoxteride
Description
After finding this site, it seems its a common occurrence

Y., Zhou, J., Hu, K
Glutathione is naturally synthesized in the body and is found in every cell, particularly in the liver

[DOI] [PubMed] [Google Scholar] 295.Sarkar C., Chakroborty D., Goswami S., Fan H., Mo X., Basu S

During polyamine synthesis, S-methyl-5-thioadenosine (MTA) is produced as a byproduct, which can be further recycled back to methionine via the salvage pathway [42,43]
