Selling it with therapeutic claims (muscle growth, fat loss, recovery enhancement) violates drug approval requirements
Also, doses of 1000 mg taken two or three times daily seems to work better than doses of 500 mg three times daily
They should be used cautiously in patients with gastro-oesophageal reflux disease
Proline synthesis and proline cycling participate in redox signaling, and targeting proline metabolism may be an effective adjunct cancer therapy (Phang, 2019)
Research published in Redox Biology found that when cells were exposed to stress, older cells' glutathione levels plummeted to just 10% of their original levels, while younger cells maintained at least 35% of their glutathione
doi: 10.1159/000479439 52 AkihiroKTetsujiNTaisukeNIchinoCKazuyaMKeikoN