Melanotan II Reconstitution & Dosage Calculator
This free Melanotan II calculator turns your vial size, the bacteriostatic water you add, and your target amount into a concentration, a draw volume, and the exact units on a U-100 insulin syringe. Melanotan II is a melanocortin receptor agonist typically handled in micrograms, so draws are small and the dilution you choose has a large effect on how readable they are.
Melanotan II reconstitution calculator
Syringe
U-100 insulinPeptide in vial
Target amount
Bacteriostatic water
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Quick summary
- Converts vial size (mg), bacteriostatic water (mL), and target amount (mcg or mg) into concentration, draw volume, and U-100 units.
- Built for the microgram amounts Melanotan II is typically studied at, with reference math for 10 mg vials.
- Educational research and measurement tool only — it does not diagnose, treat, or recommend an amount.
What this Melanotan II calculator does
This calculator does one job well: it turns your vial size, the amount of bacteriostatic water you add, and your target amount into a concentration (mg/mL), a draw volume (mL), and the matching units on a U-100 insulin syringe. Change any input and the result updates instantly.
Melanotan II ships as a freeze-dried powder. Before it can be measured into a syringe it has to be reconstituted — dissolved in bacteriostatic water. How much water you add sets the concentration, and the concentration sets how many units each amount works out to. The presets above cover the most common Melanotan II vial setups; use the custom fields for anything else.
How to use the Melanotan II calculator
Pick your syringe
Choose the U-100 insulin syringe you'll draw with. Smaller syringes (0.3 mL / 30u) have finer lines, which helps when the draw is small.
Enter your vial and water
Set the milligrams in your Melanotan II vial and the bacteriostatic water you added. Together these set the concentration.
Set your target amount
Toggle mg or mcg and pick (or type) the amount you're measuring for. The calculator does the conversion for you.
Read the draw
The result panel shows concentration, draw volume, and the exact U-100 units to pull, plus how many doses your vial contains.
Melanotan II reconstitution math, explained
The math is short. Concentration = vial size ÷ bacteriostatic water. Draw volume = target amount ÷ concentration. Units = draw volume × 100 (a U-100 syringe reads 100 units per mL). The table below shows common Melanotan II setups and the units for a 1 mg amount at each.
| Vial size | Bac water | Concentration | Units per 1 mg |
|---|---|---|---|
| 10 mg | 1.0 mL | 10 mg/mL | 500 mcg = 5 units |
| 10 mg | 2.0 mL | 5 mg/mL | 500 mcg = 10 units |
| 10 mg | 2.5 mL | 4 mg/mL | 500 mcg = 12.5 units |
| 10 mg | 5.0 mL | 2 mg/mL | 500 mcg = 25 units |
Melanotan II amount-to-units reference
How common amounts convert to U-100 syringe units at two example concentrations. These are arithmetic conversions for reference, not a recommendation of any amount.
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 250 mcg | 0.05 mL | 5 units |
| 500 mcg | 0.10 mL | 10 units |
| 750 mcg | 0.15 mL | 15 units |
| 1000 mcg (1 mg) | 0.20 mL | 20 units |
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 250 mcg | 0.125 mL | 12.5 units |
| 500 mcg | 0.25 mL | 25 units |
| 750 mcg | 0.375 mL | 37.5 units |
| 1000 mcg (1 mg) | 0.50 mL | 50 units |
Mixing, color & storage tips
More water makes small amounts readable
At 10 mg/mL a 250 mcg target is only 2.5 units — very hard to measure. Reconstituting the same vial with 5 mL (2 mg/mL) turns it into 12.5 units, which is far easier to read accurately on the barrel.
mcg vs mg
Melanotan II references are usually written in micrograms. 1 mg = 1000 mcg, so a 500 mcg entry and a 0.5 mg entry produce an identical draw. The calculator accepts either.
Mixing without foam
Add the bacteriostatic water slowly down the inside wall of the vial rather than directly onto the powder, then swirl gently. Do not shake.
Storage and vial life
Keep the dry powder cold and dark. After reconstitution, refrigerate, keep it out of light, and plan around a limited usable window. Do not freeze a reconstituted vial.
Melanotan II supplies checklist
A simple reconstitution shopping list. Confirm vial size and batch documentation before you buy.
Melanotan II
- Batch COA on every vial
- Third-party purity tested
- U.S. fulfillment, discreet shipping
Melanotan II — frequently asked questions
What does this Melanotan II calculator tell me?
It converts your vial size, bacteriostatic water volume, and target amount into concentration in mg/mL, draw volume in mL, and the matching units on a U-100 insulin syringe. It is a measurement tool, not a recommendation.
Is the Melanotan 2 calculator free?
Yes. It runs entirely in your browser, is free, and requires no account or signup.
How much bacteriostatic water do I add to a 10 mg Melanotan II vial?
That depends on how readable you want the draw. 10 mg with 2 mL makes 5 mg/mL, so a 500 mcg target is 10 units. Using 5 mL makes 2 mg/mL and the same amount becomes 25 units — easier to measure precisely.
How many units is 500 mcg of Melanotan II?
At 5 mg/mL it is 10 units (0.1 mL). At 2 mg/mL it is 25 units (0.25 mL). Units always depend on your specific concentration.
What is the difference between Melanotan I and Melanotan II?
They are different melanocortin peptides. Melanotan II is the more broadly acting of the two at melanocortin receptors. This calculator handles the reconstitution math for whichever vial you enter, but the compounds are not interchangeable.
Is Melanotan II FDA-approved?
No. Melanotan II is not an FDA-approved drug. It is sold strictly as a research-use-only compound, not for human or veterinary use.
Is this medical advice?
No. This page and calculator are for education and research planning only. They do not diagnose, treat, or recommend an amount.
