Melanotan I dosage chart: how many units on the syringe

What the chart actually calculates

Two numbers control everything on this page: how much peptide is in the vial, and how much bacteriostatic water you add to it. Dividing the first by the second gives concentration in milligrams per milliliter. Dividing your intended dose by that concentration gives a volume. The chart then expresses that volume in the units printed on a U-100 insulin syringe.

The U-100 label describes the scale on the barrel, not the drug. One full milliliter of liquid fills the barrel to one hundred units, so each unit mark is one hundredth of a milliliter. This is why the same syringe works for any peptide at any concentration. The syringe measures liquid. It has no idea what is dissolved in that liquid.

Only one vial size is listed for Melanotan I here, 10 mg, so every row in the table starts from the same amount of peptide. What changes across the table is the water and the dose.

Three things to notice in the table

First, adding more water does not weaken your dose. It changes the number of units you draw. A 1 mg dose is 10 units at the 1 mL mix, 20 units at 2 mL, and 30 units at 3 mL. All three draws deliver 1 mg. The peptide is spread through more liquid, so you need more liquid to capture the same amount of it.

Second, the smallest dose in the tightest mix produces the smallest reading on the syringe. A 0.5 mg dose from a 10 mg vial in 1 mL lands at 5 units. That is a short pull on the plunger, and a small misread of the barrel is a large fraction of the intended dose. Mixing the same vial with more water pushes that same dose out to 10 or 15 units, which is easier to read against the printed marks.

Third, the largest combination in the table, 2 mg from a 10 mg vial in 3 mL, comes to 60 units. That is a substantial share of the barrel but still a single draw. Nothing in this table requires two injections to deliver one dose, though that is arithmetic, not a recommendation.

What this site does not know about Melanotan I

We hold no reliable human pharmacokinetic data for Melanotan I. That means this page makes no claim about its half life, how long it stays in the body, how quickly it clears, or whether repeated doses build up. Anyone quoting a duration figure for this compound is not getting it from us.

Because of that gap, the chart cannot tell you how often to dose or how doses spaced over time relate to each other. It converts one dose into one syringe reading. That is the entire scope.

The dose amounts listed, 0.5 mg, 1 mg, and 2 mg, are figures that appear in product listings. They are inputs to the arithmetic, not endorsements. We did not evaluate them and we do not know whether any of them is appropriate for any person. This site has no medical review process and does not answer clinical questions.

Practical points around the arithmetic

Write the water volume on the vial as soon as you mix it. A reconstituted vial looks identical whether it holds 1 mL or 3 mL of water once it is in a fridge next to other vials, and the entire unit conversion depends on knowing which one it is. Getting this wrong is the most common way a correct chart produces a wrong draw.

The concentration figures in the table are the bridge between the two halves of the calculation. At 1 mL the vial sits at 10 mg/mL, at 2 mL it is 5 mg/mL, and at 3 mL it is 3.33 mg/mL. That last figure is a rounded decimal, which is worth remembering if you are checking the math by hand and your result sits fractionally off a whole unit.

Melanotan I has been approved by a regulator for human use in at least one market. That says nothing about the contents of any vial you may have bought, and it does not validate the doses in the listings that fed this chart. Approval attaches to a specific product from a specific manufacturer, not to a compound name.

What we do not know

We hold no reliable human pharmacokinetic data for Melanotan I, so this site makes no claims about its half life, how long it takes to clear, or how it accumulates. The arithmetic below concerns concentration and volume only.

This page answers arithmetic and handling questions. It does not tell you what dose to take, what to expect, or whether anything is appropriate for you, and there is no medical review behind it.

Common questions

How many units is 1 mg of Melanotan I?

There is no single answer without knowing the water volume. From a 10 mg vial, 1 mg is 10 units if you mixed with 1 mL, 20 units with 2 mL, and 30 units with 3 mL. The vial size and the water volume together determine the reading.

Does using less water make the dose stronger?

No. Less water makes the solution more concentrated, so the same dose occupies fewer units on the syringe. The amount of peptide delivered is unchanged. A 0.5 mg dose is 0.5 mg whether it reads as 5 units or 15 units.

What is the difference between milligrams and units?

Milligrams measure the peptide. Units measure liquid volume on the syringe barrel. The chart converts between them using the concentration of your specific mix. A unit reading is meaningless unless you also know the vial size and how much water went into it.

How much bacteriostatic water should I use?

This page cannot recommend a volume. The chart shows 1, 2, and 3 mL because those are the volumes commonly used with a 10 mg vial. The trade-off visible in the table is that more water gives larger, easier-to-read syringe numbers for the same dose.

How long does Melanotan I last in the body?

We do not know and we will not guess. There is no reliable human pharmacokinetic data available to us for this compound, so this site makes no claim about half life, clearance, or accumulation. The chart covers concentration and volume only.

Is this chart medical advice?

No. It is arithmetic. It converts a dose you have already decided on into a syringe reading. It does not tell you what dose to take, whether Melanotan I is safe, whether it works, or what effects to expect. This site has no medical review and does not answer those questions.