Victoria’s Chief Health Officer has issued a warning for people to avoid unapproved peptides, following a series of allergic reactions in recent weeks.
The products are promoted for weight loss, performance enhancement, muscle gain, injury recovery, anti-ageing effects and longevity and are commonly purchased online, via social media platforms and through informal sales channels.
“People are strongly advised not to purchase or use unapproved peptide products,” said Chief Health Officer Dr Caroline McElnay. “Consumers should seek advice from qualified healthcare professionals and use only products supplied through Australian pharmacies.”
Since July 2025, 13 anaphylaxis cases associated with unapproved peptides have been notified in Victoria, including 5 cases in September 2026 and 2 cases last month.
Unapproved peptide products carry significant safety risks including immediate and potentially fatal anaphylaxis, inflammatory responses, wide-ranging body side effects, musculoskeletal injuries and liver damage.
Anaphylaxis is a rapid onset, potentially fatal condition requiring emergency care and can occur following the first dose or even after multiple doses which have been otherwise uneventful.
The latest warning follows concerns expressed by Victorian and federal authorities in June and a recent advisory in NSW about increased cases of adverse reactions to unauthorised peptides.