Side-by-side comparison: effects, dosing ranges, side effects, regulatory status, and reconstitution.
Peptide A
Cosmetic
Synthetic melanocortin peptide with tanning, appetite-suppressive, and sexual function effects.
Peptide B
Cosmetic
Eight-amino-acid SNARE-blocking peptide — topical "botox-alternative" for expression lines.
Typical vial
10 mg
Typical dose
250-1000 mcg
Half-life
~33 minutes
FDA status
Not FDA approved. The FDA has issued warnings against the us…
Typical vial
10 mg
Typical dose
5-10% topical concentration mcg
Half-life
Topical (residence time on skin)
FDA status
Cosmetic ingredient (not regulated as a drug).
Melanotan II effects
SNAP-8 effects
Melanotan II side effects
SNAP-8 side effects
Melanotan II dosing ranges
Tanning (loading phase)
250-500 mcg · Once daily · 2-3 weeks
Tanning (maintenance)
250-500 mcg · Once or twice weekly · Ongoing with UV exposure
Sexual function enhancement
500-1000 mcg · As needed, 1-2 hours before activity · As needed
SNAP-8 dosing ranges
Topical anti-aging (cosmetic)
5-10% w/w in topical formulation · Once or twice daily · 8-12 weeks minimum for visible results
Melanotan II: Synthetic melanocortin peptide with tanning, appetite-suppressive, and sexual function effects. Typical dose 250-1000 mcg. SNAP-8: Eight-amino-acid SNARE-blocking peptide — topical "botox-alternative" for expression lines. Typical dose 5-10% topical concentration mcg. Both fall under the Cosmetic category.
Stacking Melanotan II with SNAP-8 is a protocol-design question best raised with a clinician — it depends on your goal, current bloodwork, and whether both peptides target overlapping mechanisms. Both peptides should be tracked independently with separate injection sites and timing. PinnyPeptide supports multi-peptide stacks with automatic injection site rotation.
Melanotan II is typically dosed: Once daily for Tanning (loading phase); Once or twice weekly for Tanning (maintenance); As needed, 1-2 hours before activity for Sexual function enhancement. SNAP-8 is typically dosed: Once or twice daily for Topical anti-aging (cosmetic).
Melanotan II: Not FDA approved. The FDA has issued warnings against the use of Melanotan II, citing it as an unregulated and potentially dangerous product. The derivative PT-141 (bremelanotide/Vyleesi) was approved for sexual dysfunction but Melanotan II itself was not pursued for approval. SNAP-8: Cosmetic ingredient (not regulated as a drug).
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