Melanotan I
Sourcing GuideSourcing Melanotan I from research-grade vendors requires the QC framework that governs any peptide procurement: certificate of analysis review, lot-specific verification, third-party laboratory issuance, and — critically — endotoxin testing for injectable material. The non-cyclic α-MSH analogue with selective MC1R activity — FDA-approved as an implant for erythropoietic protoporphyria. The three-tier vendor market (pharmaceutical-grade compounded, reputable research-grade, grey-market) is described below.
Key Takeaways
Procurement lens: Melanotan I sourcing requires lot-specific COA, HPLC purity ≥98%, mass spec confirmation matching 1646 Da. Mechanism: Selective melanocortin-1 receptor (MC1R) agonist. Storage: lyophilised at -20°C for 18-24 months; reconstituted at 4°C for 14-28 days. Vendor tier: pharmaceutical-grade compounded > reputable research-grade > grey-market (3-5x cost differential; quality differential substantially larger). Sourcing-validated stack partners: BPC-157, TB-500, GHK-Cu.
Selective melanocortin-1 receptor (MC1R) agonist. Increases eumelanin production in melanocytes. Provides photoprotection. Lacks the MC4R-mediated central effects (libido, appetite, sexual response) of Melanotan II. Sourcing implications: the mechanism dictates which analytical assays are appropriate for QC, which storage conditions preserve activity, and which reconstitution and use practices matter. The subsections below cover HPLC and analytical identity, COA evaluation and red flags, reconstitution and storage, and vendor tier comparison for Melanotan I.
Reconstitution and storage protocols
Melanotan I is typically supplied lyophilised in glass vials for reconstitution with bacteriostatic water. Standard reconstitution: dissolve at 1–2 mg/mL, store reconstituted material at 4°C, and use within 14–28 days. Avoid freeze-thaw cycles of reconstituted material. Lyophilised storage at −20°C extends shelf life to 18–24 months for most peptides in this class.
COA evaluation and red flags
Acceptable Melanotan I certificates of analysis specify: (1) lot number matching the vial, (2) HPLC purity with chromatographic trace, (3) mass spec confirmation, (4) endotoxin testing for SubQ-route use, and (5) issuance from an accredited third-party laboratory. Template COAs that cannot be traced to a specific lot, COAs missing endotoxin data for injectable material, and COAs issued by the vendor's own laboratory rather than a third party are all sourcing red flags.
HPLC purity and analytical identity
Minimum acceptable HPLC purity for Melanotan I is ≥98% in research-grade material. Mass spec confirmation should show the characteristic m/z of 1646 (M+H)+. Contaminant peaks above 1% in the HPLC trace warrant quantification on the COA and — ideally — structural identification of the major impurities.
Pharmaceutical-grade compounded Melanotan I is the lowest-risk sourcing path for hplc purity use where the route permits, particularly for users with clinical supervision. Research-grade material from accredited vendors is the practical alternative; grey-market sourcing is not appropriate for this application.
Sourcing Melanotan I for red flag detection use requires the same QC discipline as any peptide procurement: lot-specific COA, HPLC purity ≥98%, mass spec confirmation, endotoxin testing for injectable routes. Application-specific use does not relax the sourcing standard.
For users targeting reconstitution guide, the sourcing question is whether the chosen vendor consistently delivers analytical-spec material across lots. Repeated re-orders from the same vendor with mid-cycle COA spot-checks is the procurement pattern that catches lot drift before it affects results.
Pharmaceutical-grade compounded Melanotan I is the lowest-risk sourcing path for lyophilisation quality use where the route permits, particularly for users with clinical supervision. Research-grade material from accredited vendors is the practical alternative; grey-market sourcing is not appropriate for this application.
| Goal | Route | Dose | Cycle |
|---|---|---|---|
| Standard protocol | SubQ | 0.5-1 mg | 8–12 weeks on / 4 weeks off |
| Conservative starter | SubQ | 1.5-1 mg | 4–6 weeks initial cycle |
| Sourcing Guide focus | SubQ | 0.5-1 mg | 1x daily during loading; less frequent maintenance |
| Maintenance phase | SubQ | 1.5-1 mg | Ongoing with periodic pauses |
Dose timing for Melanotan I is important relative to food and training given the short half-life. Consistency through the cycle is more important than the precise clock time of individual doses.
Melanotan I stacks well with compounds on complementary pathways. The pairings below are the conventional combinations from experienced peptide buyers.
- Melanotan I + BPC-157: Upregulates VEGFR2 to promote angiogenesis and activates the FAK-paxillin pathway for accelerated tissue repair. Pairs naturally with Melanotan I's mechanism in sourcing / quality / procurement protocols.
- Melanotan I + TB-500: Binds G-actin monomers and prevents their incorporation into F-actin filaments, regulating the cellular actin pool. Pairs naturally with Melanotan I's mechanism in sourcing / quality / procurement protocols.
- Melanotan I + GHK-Cu: GHK chelates copper(II) and acts as a transcriptional modulator: published microarray data show it influences over 4,000 human genes including resetting expression patterns toward younger cellular phenotypes. Pairs naturally with Melanotan I's mechanism in sourcing / quality / procurement protocols.
- Melanotan I + Ipamorelin: Highly selective GHSR1a agonist. Pairs naturally with Melanotan I's mechanism in sourcing / quality / procurement protocols.
Hyperpigmentation (intended). Nausea on initial doses. Watch for new/changing moles. Avoid in personal/family melanoma history.
Lens-specific safety considerations for sourcing / quality / procurement use of Melanotan I: Hyperpigmentation (intended). Nausea on initial doses. Watch for new/changing moles. Avoid in personal/family melanoma history. Additional sourcing / quality / procurement monitoring at baseline and 6–8 week follow-up is appropriate.
| Compound | Profile | Onset | Best For |
|---|---|---|---|
| Melanotan I | α-MSH analogue (long-acting) | ~2-30 days (implant); ~30 min SubQ | Sourcing Guide |
| BPC-157 | Stable gastric pentadecapeptide | ~4 hr (oral) | Accelerated tendon, ligament, and gut tissue repair via VEGFR2-driven angiogenesis and FAK-paxillin signalling |
| TB-500 | Synthetic thymosin β4 fragment | ~2-3 days | A 17-amino-acid synthetic fragment of thymosin β4 with actin-sequestering activity — drives cell migration, tissue repair, and broad regenerative effects |
| GHK-Cu | Tripeptide-copper complex | ~30 min plasma | A naturally occurring tripeptide-copper complex that declines with age and is studied for its broad effects on wound healing, skin remodelling, and gene expression |
| Ipamorelin | Selective GHRP / ghrelin mimetic | ~2 hr | The most selective ghrelin-receptor agonist among the GHRPs — stimulates GH release with minimal effect on cortisol, prolactin, or appetite |
Visual quality inspection?
Vendor red flags?
Reconstitution best practices?
Pharmaceutical-grade versus research-grade?
How does Melanotan I's half-life affect dosing?
What is Melanotan I?
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Get ProtocolQuick Facts
- Molecular weight
- 1646 Da
- Sequence length
- 13 aa
- Half-life
- ~2-30 days (implant); ~30 min SubQ
- WADA
- Not on prohibited list
- FDA
- Approved (Scenesse implant for EPP)
- Research
- Phase III in EPP; off-label tanning use
Stack Partners
All sourcing / quality / procurement applications described on this page are derived from preclinical research, animal models, and limited human case data. None of these uses are FDA-approved indications for Melanotan I unless otherwise noted. Always work with a physician familiar with peptide therapeutics before beginning a protocol.
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