Why is retatrutide called illegal?

Illegal is internet shorthand. This site's national fields list retatrutide as investigational and not approved in the US, not licensed in the UK, not registered in Australia, and not approved in Canada. Investigational means it is still in trials and is not a legal prescription medicine in those four countries. It is not a criminal classification of possession, and it is not a state statute this dataset has filled. Selling an unapproved article as a drug for human use is a different legal question from the investigational field. A research-chemical vial is not a finished medicine under review. TRIUMPH-1 randomized 2,339 people; a company submission for approval was expected later in 2026 as of this site's last review. This FAQ does not invent a ban and does not invent a state law. National status: /legal/retatrutide/us.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of glp-1 and metabolic peptides. Semaglutide, tirzepatide, retatrutide, and the rest of the incretin and glucagon receptor family.