As of March 2026, three peptides have been reapproved for prescription use in the United States: CJC-1295, ipamorelin, and thymosin alpha-1
Most dermatologists recommend an initial 12-week intensive phase followed by ongoing maintenance therapy
While more people are using peptide injections and supplements to improve their lives, the Harvard Health Publishing article said many products have unproven health claims. David Sabatino, a professor with expertise in peptide chemical biology at Carleton University in Ottawa, said hes concerned about the rise in peptide usage in general, including among individuals who get prescriptions for Ozempic and other approved peptide-based drugs, but use them for cosmetic purposes, rather than the intended purpose for treating a health disorder
Evidence boundary An 8-, 12-, or 16-week subcutaneous schedule should not be described as clinically proven
Nature Reviews Drug Discovery, 21(8), 579-598
& Abaszadeh, S