Melanotan II vs TB-500
Overview
Melanotan II is primarily a cosmetic & skin peptide, while TB-500 is used for healing & recovery.
This page compares Melanotan II and TB-500 across their primary use, typical dosing, reported benefits and side effects, and U.S. regulatory status. For the full monograph on either compound — mechanism of action, clinical research, and references — follow the article links.
Side-by-side comparison
| Melanotan II | TB-500 | |
|---|---|---|
| Category | Cosmetic & Skin | Healing & Recovery |
| Regulatory status (US) | Not approved — Cat. 2 removed (Apr 2026) | Not approved — Cat. 2 removed (Apr 2026) |
| Typical dosage | — | 2-5 mg |
| Frequency | — | weekly |
| Reported benefits | Skin tanning without UV exposure, increased libido, potential appetite suppression | Tissue repair, improved flexibility, reduced inflammation, enhanced recovery, hair growth stimulation |
| Reported side effects | Nausea, facial flushing, darkening of moles, potential cardiovascular effects | Minimal side effects. Rare: headache, nausea, injection site reactions |
Key differences
Primary use. Melanotan II is categorised under Cosmetic & Skin, while TB-500 falls under Healing & Recovery. Their differing categories mean they are usually chosen for different goals rather than as direct substitutes.
Regulatory status. Melanotan II: not FDA-approved; removed from FDA's Category 2 in April 2026, which is not permission to compound it. TB-500: not FDA-approved; removed from FDA's Category 2 in April 2026, which is not permission to compound it.
Dosing. Typical dosing for Melanotan II is not catalogued. TB-500 is typically dosed at 2-5 mg (weekly).
Can you stack them?
Some protocols combine peptides, but stacking Melanotan II and TB-500 has not been validated for safety or efficacy in controlled trials. Combining compounds can change their effects and risks. Nothing here is medical advice — consult a qualified healthcare provider before starting or combining any protocol.
Frequently asked questions
- What is the difference between Melanotan II and TB-500?
- Melanotan II is primarily a cosmetic & skin peptide, while TB-500 is used for healing & recovery. Melanotan II is not FDA-approved; removed from FDA's Category 2 in April 2026, which is not permission to compound it, whereas TB-500 is not FDA-approved; removed from FDA's Category 2 in April 2026, which is not permission to compound it.
- What is Melanotan II used for?
- Tanning, libido.
- What is TB-500 used for?
- Tissue repair, flexibility, inflammation.
- Can you take Melanotan II and TB-500 together?
- Some users combine peptides within a single protocol, but stacking Melanotan II and TB-500 has not been established as safe or effective in controlled trials. Neither this comparison nor PeptideSciences101 is medical advice — consult a qualified healthcare provider before combining any compounds.
- Is Melanotan II or TB-500 FDA-approved?
- Melanotan II is not FDA-approved; removed from FDA's Category 2 in April 2026, which is not permission to compound it. TB-500 is not FDA-approved; removed from FDA's Category 2 in April 2026, which is not permission to compound it.
Read the full articles
- Melanotan II — full monograph: mechanism, research, dosing & references
- TB-500 — full monograph: mechanism, research, dosing & references