This content is for educational purposes only. Not medical advice. Always consult a licensed healthcare professional before using any peptides.
Melanotan II
The Sun Peptide
Melanotan II is a synthetic analog of alpha-melanocyte-stimulating hormone (a-MSH) that stimulates melanogenesis for skin tanning without UV exposure. It also activates MC3 and MC4 receptors, producing notable libido-enhancing effects. Extremely popular in the biohacking and aesthetic communities, it requires careful dosing due to its broad receptor activity.
If You Take This
- Stimulates melanin production for natural-looking tan
- Significantly enhances libido in both men and women
- Provides UV protection through increased melanin
- May reduce appetite modestly
- Improves erectile function
- Long-lasting tanning effects after loading
Protocol
Stacks Well With
Avoid With
Side Effects
- Nausea (common during loading, usually subsides)
- Facial flushing
- Darkening of existing moles (monitor closely)
- Spontaneous erections
- Fatigue after injection
- Appetite suppression
Where to Buy
PepStack Price Guarantee
We track prices across 5+ verified vendors so you don't have to. Every vendor is vetted for purity testing, third-party COAs, and shipping reliability.
Prices last verified: April 3, 2026
| Vendor | Price | Vial Size | Purity | Shipping | Status | Coupon | |
|---|---|---|---|---|---|---|---|
Ascension Peptides★ 4.7 BEST PRICE | $3.98 | 10mg | 99%+ | 2-4 business days | In Stock | — | Buy Now → |
Pinnacle Peptide Labs★ 4.3 | $39.99 | 10mg | ≥99% | — | In Stock | — | Buy Now → |
Ignite Peptides★ 4.4 | $40.00 | 10mg | ≥98% | — | In Stock | — | Buy Now → |
Ascension Peptides
★ 4.7We may earn a commission from purchases made through these links at no extra cost to you. This does not influence our recommendations. Learn more
For educational and informational purposes only. Not medical advice. Always consult a healthcare provider before starting any peptide protocol.