Inside the growing market for peptides amid concerns over safety

Injectable peptides have seen a surge in popularity and promotion online, marketed for fitness, recovery, and cosmetic benefits. However, medical professionals express doubt regarding the claims, citing a lack of scientific evidence. In Ireland, a grey market exists where peptides advertised as not for human consumption are sold.

A recent investigation by Prime Time found that three of four purchased peptide products contained significant impurities, with one sample of Melanotan containing only 40% of the advertised peptide and lacking several other components. Two other samples had substantially less powder than advertised, and all four contained undisclosed bulking agents.

These findings highlight concerns about the quality of products in the emerging peptide market, many of which have not undergone controlled human trials. Peptides encompass a wide range of substances, from established medicines to unapproved drugs and wellness and fitness-related compounds produced in unregulated facilities, often in China.

Despite the lack of scientific backing, peptides have gained popularity among fitness enthusiasts and individuals seeking health and appearance improvements. Some users report positive experiences, while others remain skeptical about the safety and effectiveness of these unregulated substances.