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Melanotan II

Melanocortin agonist

Not for human use

What it is

A synthetic peptide promoted for skin tanning, sold illicitly online and via some gyms.

What the evidence shows

It does stimulate melanin, but it has never been approved as a safe tanning product. The safety profile, not the mechanism, is the problem.

Safety & reported risks

Reported concerns include nausea, blood-pressure changes, and changes to moles requiring monitoring. The TGA has warned consumers against it. Injecting an unapproved, often counterfeit product adds contamination risk.

Status in Australia

Not approved for human use in Australia. The TGA has issued safety warnings; supply is unlawful.

How it’s lawfully accessed

There is no lawful supply pathway for human use. Supply is unlawful and the TGA actively warns against it.

Related peptides

PT-141 (Bremelanotide)Melanocortin agonistNot ARTG-approved

Frequently asked questions

Why is Melanotan II considered unsafe?

It is unapproved, commonly counterfeit, and associated with side effects and changes to skin moles. Australian regulators have specifically warned consumers against using it.

Sources & further reading

This entry is general information about Melanotan II, not a recommendation to use it. We don’t provide dosing, protocols or sourcing. Speak to a registered practitioner.

Written by The Peptides.au editorial team
Editorial review Checked against current TGA, ARTG and AHPRA public guidance
Last updated 1 June 2026

This is general education, not medical advice. Peptides.au does not sell, supply, recommend or promote any product or clinic. Always speak with a registered Australian health practitioner before making any health decision.