How to reconstitute Melanotan II
Melanotan II is sold as a freeze-dried powder, most often in 10 mg vials. Add bacteriostatic water, let it dissolve without shaking, and the concentration is the vial amount divided by the water: 10 mg in 2 mL is 5 mg/mL. On a U-100 insulin syringe one unit is 0.01 mL, so each unit carries 50 mcg, and a 250 mcg dose is 5 units.
Not approved for human use and linked to serious side effects. Commonly cited starting amounts are 250 mcg. Nothing on this page is a dosing recommendation; the calculator converts a dose you already have into syringe units.
Melanotan II doses in syringe units (10 mg vial, 2 mL water)
| Dose | Units | mL | Doses per vial |
|---|---|---|---|
| 250 mcg | 5 | 0.05 | 40 |
| 500 mcg | 10 | 0.1 | 20 |
| 1 mg | 20 | 0.2 | 10 |
Vial sizes at 250 mcg per dose
| Vial | Water | Concentration | Units per dose | Doses |
|---|---|---|---|---|
| 10 mg | 2 mL | 5 mg/mL | 5 | 40 |
The dose column is in mcg. Doubling the water halves the concentration and doubles the units per dose; the number of doses in the vial never changes. If a dose comes out under 5 units, use less water so it is easier to measure. If it exceeds the syringe, use more water or a bigger syringe.
Worked example
10 mg / 2 mL = 5 mg/mL = 5,000 mcg/mL. One unit = 0.01 mL = 50 mcg. 250 mcg / 50 mcg per unit = 5 units. The vial holds 10,000 / 250 = 40 doses, which at 7 per week is about 40 days.
See the general peptide calculator for the formulas, syringe sizes, and the common mg versus mcg mistakes.