Some peptides are FDA approved drugs. Some are legal supplements. Some are neither. The same word, peptide, covers all three categories. The regulatory status of the specific compound is what determines legality. While it's marketed online as a substance to build muscle, ibutamoren is considered a poison, is banned in sport and has a range of dangerous side effects. Educate yourself: https: sportintegrity.gov.au news integrity blog 2022 05 dont be fooled Are peptides legal in Australia? Criminal Defence Lawyers Australia Rescheduling psilocybin and MDMA in Australia A process explainer The growing market for injectable peptides includes many schedule 4 drugs that are not yet approved for use in Australia but can be prescribed by a doctor