Melanotan II peptide calculator
A 10 mg Melanotan II vial mixed with 2 ml of bacteriostatic water holds 5 mg/ml. A 250 mcg dose is 0.050 ml — 5 units on a U-100 insulin syringe — and the vial holds 40 doses of that size.
Melanotan II dosage chart: units to draw
Units on a U-100 insulin syringe (100 units = 1 ml) for Melanotan II doses from 250 mcg to 1 mg, by how much bacteriostatic water is in a 10 mg vial. The highlighted row is the 250 mcg dose used above.
| Dose | 1 ml water 10 mg/ml | 2 ml water 5 mg/ml | 3 ml water 3.33 mg/ml | Doses per vial |
|---|---|---|---|---|
| 250 mcg | 2.5 u 0.025 ml | 5 u 0.050 ml | 7.5 u 0.075 ml | 40 |
| 500 mcg | 5 u 0.050 ml | 10 u 0.10 ml | 15 u 0.15 ml | 20 |
| 1 mg | 10 u 0.10 ml | 20 u 0.20 ml | 30 u 0.30 ml | 10 |
A 5-unit draw fits comfortably on a 0.3 ml insulin syringe (30-unit capacity), whose 1-unit (often half-unit) markings are easier to read than the 2-unit ticks on a 1 ml syringe.
Unit math only, not a dosing recommendation. The dose range is what published protocols and trials describe; see the Melanotan II guide for sources.
How to reconstitute Melanotan II
- Wipe both vial stoppers with a fresh alcohol swab and let them dry.
- Draw 2 ml of bacteriostatic water into a syringe.
- Insert the needle at an angle into the Melanotan II vial and let the water run slowly down the inner wall — do not inject directly onto the powder.
- Do not shake. Gently swirl the vial until the peptide fully dissolves.
- Storage for Melanotan II: Lyophilized refrigerated. Reconstituted: refrigerated 2–8 °C, use within 28 days. At one 250 mcg dose a day the vial holds 40 doses, more than a 28-day window allows.
- For a 250 mcg dose, draw to the 5-unit mark (0.050 ml) on a U-100 insulin syringe.
About Melanotan II
Melanotan II is a synthetic analog of alpha-MSH that stimulates melanogenesis (skin darkening) and is studied for its effects on libido and appetite via the melanocortin system.
Half-life: Approximately 33 hours
Typical dose range: Loading: 250–500 mcg daily. Maintenance: 500–1000 mcg 1–2x weekly.
Class: Synthetic alpha-melanocyte stimulating hormone (α-MSH) analog
Regulatory status: Not FDA approved. Banned in several countries for consumer use. Research use only in the US.
Read the full Melanotan II guide → — mechanism, side effects, storage, regulatory status and citations. Or browse the whole peptide glossary.
Other tools for Melanotan II
Need a different unit or a different question? The peptide dose converter moves a dose between mcg, mg and IU, and the Melanotan II half-life chart shows how concentration accumulates across a dosing cadence. Loading Melanotan II into a reusable 3 ml pen instead of drawing it with a syringe? The peptide pen calculator turns the same vial into mcg per click and clicks to dial. All of them are listed on the free peptide tools page.
Melanotan II calculator FAQ
Is this a Melanotan II peptide calculator or a reconstitution calculator?
Both. This Melanotan II calculator converts vial strength, bacteriostatic-water volume, and target dose into milliliters and insulin-syringe units. It does not recommend a medical dose.
How much bacteriostatic water for a 10 mg Melanotan II vial?
This page is pre-filled with 2 ml of bacteriostatic water for a 10 mg Melanotan II vial because that is a common research ratio. You can adjust the water amount in the full calculator.
How many units is a 250 mcg Melanotan II dose?
5 units on a U-100 insulin syringe, when a 10 mg vial is mixed with 2 ml of bacteriostatic water (5 mg/ml). That is 0.050 ml. With a different amount of water the unit count changes — the dose chart on this page lists 1 ml, 2 ml, 3 ml mixes.
How many doses are in a 10 mg Melanotan II vial?
40 doses of 250 mcg. The number of doses depends only on vial strength and dose size — adding more or less water changes the volume of each draw, not how many draws the vial holds.
Does this Melanotan II dosage calculator give medical advice?
No. It only performs unit math. Dosing, titration, and whether Melanotan II is appropriate are clinical decisions that should be made with a licensed healthcare professional.
Skip the math — let the app handle it
Peptide Protocol remembers your Melanotan II vial, shows the units for every dose, tracks what is left, and rotates injection sites for you.
Get the iPhone app →Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.