Larazotide Acetate vs Melanotan 1
Side-by-side comparison of key properties, dosing, and research.
Recovery & Repair
Larazotide AcetateSkin & CosmeticSexual Health & Libido
Melanotan 1- Summary
- Larazotide acetate is an 8-amino acid peptide (Gly-Gly-Val-Leu-Val-Gln-Pro-Gly) derived from Zonula Occludens Toxin (ZOT) of Vibrio cholerae. It paradoxically acts as a ZOT antagonist to close tight junctions and reduce intestinal permeability ('leaky gut'). It is the most advanced clinical compound targeting gut permeability directly.
- Melanotan 1 (Afamelanotide) is a synthetic analog of α-MSH that selectively stimulates melanogenesis (tanning) through MC1R activation. It provides UV-independent skin pigmentation and is FDA/EMA-approved under the name SCENESSE for erythropoietic protoporphyria (EPP) and vitiligo.
- Half-Life
- Local gut action; minimal systemic exposure
- ~40–60 minutes (free peptide); implant formulation (SCENESSE) releases over months
- Admin Route
- Oral
- SubQ
- Research
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- Typical Dose
- 0.5-2 mg
- 0.5–1 mg
- Frequency
- 3x daily
- Daily until desired color achieved, then maintenance
- Key Benefits
- Directly reduces intestinal tight junction permeability
- Clinical efficacy in celiac disease (Phase 3 trials)
- Reduces systemic inflammation from gut permeability
- Targets root cause of leaky gut (Zonulin pathway)
- Local gut action without systemic absorption
- Potential application in IBS, IBD, autoimmune conditions
- Induces skin pigmentation/tanning without UV exposure
- Provides photoprotection in photosensitivity conditions (EPP)
- FDA-approved for erythropoietic protoporphyria (SCENESSE)
- Approved in EU for EPP treatment
- Anti-inflammatory via MC1R
- Mild libido enhancement
- Potential skin cancer prevention through melanin protection
- Side Effects
- Headache (mild, dose-dependent)
- Nausea (rare)
- Well-tolerated overall in clinical trials
- Nausea (especially at higher doses)
- Facial flushing
- Fatigue
- Injection site reactions
- +3 more
- Stacks With
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