Reviewed by the PeptideMind Team Updated July 28, 2026 Melanotan 1 vs Melanotan 2: Key differences comparison The main difference between Melanotan I and Melanotan II is selectivity: Melanotan I targets one receptor and builds pigment only, while Melanotan II targets several, which is also why it's linked to appetite and libido effects
Furthermore, it can help minimize the appearance of acne and eczema, as well as reduce redness and inflammation associated with rosacea
Retatrutide is an investigational triple agonist (GLP-1, GIP, glucagon receptors) not yet licensed by the MHRA or EMA in the UK
The two share the same three peptides at identical doses, so switching mid-cycle is a vial swap
Beyond its hepatoprotective effects, an expanding body of research has underscored the immunoregulatory properties of SCO, indicating its potential therapeutic benefits for autoimmune and other inflammatory diseases