What is Melanotan II?
It is a synthetic melanocortin analogue studied in peptide and receptor research. The name does not establish authorization, product identity, or a safe consumer use.
Melanotan II Reconstitution Calculator
Classification: Synthetic cyclic melanocortin analogue studied in relation to melanocortin-receptor biology.
Overview
Melanotan II is a synthetic melanocortin analogue. It was designed to study prolonged melanocortin signaling and has been investigated for effects involving melanocortin receptors. The compound’s research history is not the same as authorization for a consumer product, and a research finding cannot be converted into a claim about safe pigmentation or another desired outcome.
Melanotan II also appears under abbreviated labels such as MT-II and MT-2. PepLedger’s calculator does not authenticate a vial, determine whether a label describes the intended sequence, or resolve a salt or formulation question.
The arithmetic portion is deliberately narrow. A visitor supplies the mass, liquid volume, amount to calculate, and a syringe scale. The result is a concentration-based volume calculation. It is not a tanning direction, product-selection tool, or advice about use.
Research context
Peer-reviewed reviews describe the historical development of melanocortin peptide analogues and their clinical research history. Other PubMed records discuss synthesis and a case report involving melanoma after use of Melanotan II. A case report cannot establish causation, but it is a reason to avoid turning the literature into reassurance.
Research involving pigmentation, melanocortin receptors, appetite, or sexual-function endpoints should be read in its original design and population. PepLedger does not summarize those endpoints as benefits or predict an individual outcome.
Evidence and regulatory status
The FDA warning-letter record states that Melanotan II was considered an unapproved new drug in the marketing context described there. Australia’s Therapeutic Goods Administration has separately published a public safety warning about melanotan products. These sources support a cautious regulatory description, not a claim that every jurisdiction uses identical legal language.
As of the review date, this configuration treats Melanotan II as an unapproved research compound and does not imply a tanning use. Regulatory records can change; consult the responsible authority for a jurisdiction-specific determination.
Unit notes
For mass-based entries, 1 mg = 1,000 mcg. Concentration is normalized mass divided by liquid volume. U-100 means 100 units per mL and U-40 means 40 units per mL; these describe the display scale.
Syringe units are not a mass unit. A scale position represents a volume, and its corresponding mass depends on the concentration calculated from the visitor’s entries.
Limitations
- Arithmetic cannot assess melanocortin activity, identity, contaminants, sterility, pigmentation response, lesions, or individual medical risk. It cannot make an unapproved material into an approved product.
- PepLedger does not determine or recommend an amount. It performs arithmetic using values entered by the visitor. Package and liquid-volume options, if displayed, exist only to make data entry easier and do not represent validated settings.
Frequently asked questions
Is Melanotan II approved as a tanning product?
The cited FDA record describes it as an unapproved new drug in the marketing context addressed there. PepLedger makes no claim of approval or authorization.
What does this calculator calculate?
It calculates concentration, represented liquid volume, and syringe-scale units from values manually entered by the visitor.
Does PepLedger provide a tanning schedule or amount?
No. PepLedger does not determine or recommend an amount. It performs arithmetic using values entered by the visitor and does not provide tanning guidance.
Why cannot syringe units identify Melanotan II mass?
Syringe units indicate volume on a selected scale. Mass can be inferred only after the visitor’s concentration has been calculated from the entered values.
Sources and official references
- Melanocortin peptide therapeutics: historical milestones, clinical studies and commercialization — PubMed; European Journal of Pharmacology (2006)
- The first preparative solution phase synthesis of melanotan II — PubMed; Journal of Peptide Science (2008)
- Melanotan II warning letter record — U.S. Food and Drug Administration (2019)
- Don’t risk using tanning products containing melanotan — Therapeutic Goods Administration, Australian Government (2024)
Calculation methodology
PepLedger calculates concentration, liquid volume and syringe-scale position exclusively from the values you enter. It does not choose or recommend an amount.
View our calculation methodology and editorial standards
Last updated: September 13, 2026