How many units is 1 mg of Tesamorelin?

It depends entirely on how much water you added. In a 10 mg vial reconstituted with 2 mL, the concentration is 5 mg/mL, so 1 mg is 0.2 mL, which is 20 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 10 units, and with 3 mL it is 30 units.

How much bacteriostatic water for a 10 mg Tesamorelin vial?

2 mL is the usual choice. It gives 5 mg/mL, which puts the commonly reported range of 0.5 mg to 2 mg between roughly 10 and 40 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.

How many doses are in a 10 mg vial?

Divide 10 by your dose. At 1 mg that is 10 doses, which at once daily is 10 days.

How many units is 2 mg of tesamorelin?

In a 10 mg vial with 2 mL of water, 40 units on a U-100 syringe. In a 5 mg vial with 1 mL, also 40 units. In a 2 mg vial with 1 mL, the whole 100 units.

Tesamorelin dosage calculator

In a 10 mg vial with 2 mL of water (5 mg/mL), 1 mg of Tesamorelin is 20 units on a U-100 insulin syringe. Tesamorelin is dosed in whole milligrams once a day, so the draw is larger than most peptides here.

Reviewed 3 September 2026
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Dose to units at the usual vial and water

Dose	U-100 units	Draw	Doses per vial	Vial lasts
0.5 mg	10 units	0.1 mL	20	20 days
1 mg	20 units	0.2 mL	10	10 days
1.5 mg	30 units	0.3 mL	6	6 days
2 mg	40 units	0.4 mL	5	5 days

10 mg vial in 2 mL of bacteriostatic water (5 mg/mL), U-100 insulin syringe, once daily.

About Tesamorelin

Tesamorelin is a stabilised GHRH analogue and, unusually for this list, a licensed medicine (Egrifta) for HIV-associated abdominal fat. The licensed dose is 2 mg once daily by subcutaneous injection. Research vials of 2, 5 and 10 mg are sold outside that licence.

Because the dose is in whole milligrams, the draw is large relative to other peptides. A 10 mg vial with 2 mL of water is 5 mg/mL, so 2 mg is 0.4 mL, or 40 units. A 2 mg vial is a single dose and is usually reconstituted with 0.5 to 1 mL and drawn entirely.

The same 10 mg vial at other water volumes

If the draw is awkward to read, change the water, not the dose. The dose stays the same; only the mark moves.

Vial	BAC water	Concentration	Draw	U-100 units	Doses/vial
10 mg	1 mL	10 mg/mL	0.1 mL	10 units	10
10 mg	2 mL	5 mg/mL	0.2 mL	20 units	10
10 mg	3 mL	3.33 mg/mL	0.3 mL	30 units	10
5 mg	1 mL	5 mg/mL	0.2 mL	20 units	5
5 mg	2 mL	2.5 mg/mL	0.4 mL	40 units	5
5 mg	3 mL	1.67 mg/mL	0.6 mL	60 units	5

All rows above assume a 1 mg dose and a standard U-100 insulin syringe, where 100 units = 1 mL.

How long it lasts in the body

The half-life of Tesamorelin is about 36 minutes. That is the time for the amount in your blood to halve, so after one half-life you are at 50 percent of the peak, after two you are at 25 percent, and after four you are at roughly 6 percent. It is gone within an hour or two. What it triggers (a growth hormone pulse, for instance) lasts longer than the peptide itself, which is why timing matters more than the exact number of minutes.

Common questions

How many units is 1 mg of Tesamorelin?: It depends entirely on how much water you added. In a 10 mg vial reconstituted with 2 mL, the concentration is 5 mg/mL, so 1 mg is 0.2 mL, which is 20 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 10 units, and with 3 mL it is 30 units.
How much bacteriostatic water for a 10 mg Tesamorelin vial?: 2 mL is the usual choice. It gives 5 mg/mL, which puts the commonly reported range of 0.5 mg to 2 mg between roughly 10 and 40 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.
How many doses are in a 10 mg vial?: Divide 10 by your dose. At 1 mg that is 10 doses, which at once daily is 10 days.
How many units is 2 mg of tesamorelin?: In a 10 mg vial with 2 mL of water, 40 units on a U-100 syringe. In a 5 mg vial with 1 mL, also 40 units. In a 2 mg vial with 1 mL, the whole 100 units.

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ReviewedDose ranges and half-lives checked 3 September 2026.

Buying Tesamorelin?

Peptulator does not list, rank or link vendors. Whoever the supplier is, use the strength printed on your own vial and check the batch certificate of analysis before you rely on any number here.

The Tesamorelin guideDosing, evidence and side effects, at Peptide Bureau Read a syringeU-100 vs U-40, and the 2.5x error Build a full protocolThe stack builder at Peptide Bureau, about two minutes

Common conversions

The same three-step maths, pre-filled for the doses people ask about most. Units on a U-100 insulin syringe, where 100 units is 1 mL.

mg to units calculator Any dose at any concentration, both directions, with the full reference tables
Units to mg calculator What the units you drew are in milligrams
1 mg to units The most-asked conversion, at every common setup

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Every one of the 27 compound calculators, charts and tools: the full list.

Before you use these numbers This is a unit-conversion tool. It turns a vial strength and a water volume into a concentration, a draw volume and a syringe mark. It does not tell you what to take, whether to take it, or whether a compound is safe for you. Most compounds listed are sold for laboratory research and are not approved for human use. Nothing here is medical advice. Dosing decisions belong with a licensed clinician who knows your history. Always check the strength printed on your own vial rather than trusting a preset.