Melanotan II is a peptide examined in pilot studies of pigmentation and sexual responses. These small studies do not validate market products for tanning or performance enhancement.
What the research shows
A 1996 phase 1 pilot included only three men, reporting pigmentation changes in some participants alongside effects such as nausea and sleepiness. A 1998 study in ten men assessed erectile responses. Their size and purpose do not support broad safety assurances. [1] [2] [3]
The TGA states that melanotan is not approved for sale or use as a tanning agent in Australia. This describes Australian status, not a Thai product-registration check. [3]
Distinguishing substances and products
Melanotan II, PT-141 and afamelanotide need distinct identification. Evidence or product status for one cannot be transferred to another merely because they concern related signalling pathways.
Reading a specific brand’s label
Start with the exact substance and product name, then match the label to the manufacturer’s documents. This article does not establish Thai registration or current availability for an unspecified product.
Frequently asked questions
Do the pilot studies establish product safety?
No. Small studies are not quality tests or safety certifications of particular products.
Is Melanotan II the same as PT-141?
No. Identify the substance before interpreting studies or comparing products.
What information helps identify a specific product?
The brand, product name, full label and matching manufacturer documents. Evidence about the substance alone does not establish a product’s identity, registration or quality.
Related information
For general questions about names or label details, contact LINE: @musclestationth
Sources and review date
Sources checked: 11 September 2026. This page explains selected primary sources; it is not a systematic review of every study.