In April 2026, the UK medicines regulator opened an investigation into peptide clinics making health claims about compounds they cannot legally sell as medicines [1]
In the cosmetic peptide world, GHK-Cu has been a long-standing ingredient in topical skin and hair preparations and has substantial commercial use in that context
BPC 157, L-NAME, L-Arginine, NO-Relation, in the Suited Rat Ketamine Models Resembling Negative-Like Symptoms of Schizophrenia
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Furthermore, there is a rapid decline in response and an increase in side effects associated with higher doses of erythromycin [65]