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Weight Loss

Retatrutide

Also called LY3437943.

Published by Peptide Directory. Written and maintained in-house. We are not clinicians and this page carries no clinical review.

Regulatory status is taken from the Poisons Standard directly.Last checked 1 August 2026. How we verify

Draft entry. Body copy and fact checks are pending a /new-content pass. Nothing here is verified.

Legal status in Australia

Not specifically scheduled

Not named anywhere in the June 2026 Poisons Standard, because it is still investigational and not approved as a medicine in Australia or anywhere else. Unscheduled is not a loophole here: an unapproved therapeutic good cannot lawfully be supplied for human use, so anything sold as retatrutide is outside the approved supply chain entirely.

Poisons Standard: Not named in the Poisons Standard
Category: Weight Loss

Source: Poisons Standard (June 2026), F2026L00633, searched for retatrutideLast checked: 1 August 2026

Often confused with

Semaglutide

Prescription only. An approved medicine in Australia, so a doctor can prescribe it and a pharmacy can dispense it. Not in Appendix D clause 5, so it does not carry the possession offence that applies to most research peptides.

Approved, prescription needed

Tirzepatide

Prescription only. An approved medicine in Australia. Appendix L sets required advisory statements for labels and is a labelling control, not a possession restriction.

Approved, prescription needed