Which regulators have warned about each peptide

Regulatory fact: 12 notices read on each regulator's own site. 8 peptides, 5 regulators. Retatrutide is named by all 5. Last checked .

PeptideFDAUnited StatesTGAAustraliaHealth CanadaCanadaMHRAUnited KingdomMedsafeNew Zealand
BPC-157 Named in a warning Category 2 safety risk page; 2 warning letters Named in a warning Named in the April 2026 alert and June 2026 statement Named in a warning Named in all three advisories Not named No MHRA notice naming it found Prescription medicine by name Prescription medicine since 2023; analogues added as a group in 2025
Retatrutide Named in a warning Named in 21 of 29 warning letters Named in a warning Named in the April 2026 alert and June 2026 statement Named in a warning Named in the 2025 Canada Peptide and 2026 advisories Named in a warning Not authorized in the UK; three 2026 releases Prescription medicine by name Listed by name as a prescription medicine, December 2025
TB-500 Named in a warning Category 2 safety risk page; 3 warning letters Named in a warning Named in the April 2026 alert and June 2026 statement Named in a warning Named in all three advisories Not named No MHRA notice naming it found Covered by a group entry Prescription medicine (Medsafe, June 2025); thymic peptide group, December 2025
CJC-1295 Named in a warning Category 2 safety risk page Named in a warning Named in the April 2026 alert and June 2026 statement Named in a warning Named in all three advisories Not named No MHRA notice naming it found Not named Not named in the Medsafe notices listed here
GHK-Cu Named in a warning Category 2 safety risk page, injectable form only Named in a warning Named in the April 2026 alert and June 2026 statement Named in a warning Named in all three advisories Not named No MHRA notice naming it found Not named Not named in the Medsafe notices listed here
Melanotan II Named in a warning Category 2 safety risk page Not named Not named in the TGA notices listed here Named in a warning Named in all three advisories Not named No MHRA notice naming it found Not named Not named in the Medsafe notices listed here
MOTS-c Named in a warning Category 2 safety risk page Not named Not named in the TGA notices listed here Named in a warning Named in the 2025 Calgary and 2026 advisories Not named No MHRA notice naming it found Covered by a group entry Mitochondria-derived peptide group, December 2025
Epitalon Named in a warning Category 2 safety risk page; 1 warning letter Not named Not named in the TGA notices listed here Named in a warning Named in all three advisories Not named No MHRA notice naming it found Covered by a group entry Pineal gland peptide group, December 2025