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Tesamorelin dosage calculator

Mix a 5 mg Tesamorelin vial with 2 mL of bacteriostatic water to get 2.5 mg/mL. A 1 mg dose is then 0.4 mL, which is 40 units on a U-100 insulin syringe.

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  • U-100 syringe units

Tesamorelin dose calculator

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On the vial label
mg
Amount you add
mL
What you plan to take
Syringe sizeU-100 insulin syringe
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How your Tesamorelin draw is calculated

  1. 1Find the concentration

    5 mg × 1,000 ÷ 2 mL
    = 2,500 mcg/mL

  2. 2Work out the volume

    1,000 mcg ÷ 2,500 mcg/mL
    = 0.40 mL

  3. 3Convert to units

    0.40 mL × 100
    = 40 units

On a U-100 insulin syringe, 100 units equals 1 mL, so each unit is 0.01 mL. The 0.3 mL (30 unit) and 0.5 mL (50 unit) syringes use the same scale, just shorter, which makes small doses easier to read.

Use this tesamorelin dosage calculator to convert vial strength, BAC water volume, and target dose into the exact amount to draw in mL and syringe units. Tesamorelin is a stabilised growth-hormone-releasing hormone analogue; this page handles the unit conversions, not dosing decisions.

Common vial examples
2 / 5 / 10 mg
Example dose
1 mg
Common syringe
U-100 insulin
Last reviewed

Storage before and after reconstitution: Egrifta SV: inject immediately after mixing, do not refrigerate the mixed solution. Egrifta WR: keep at room temperature and discard 7 days after mixing. Research vials have no label: refrigerate, protect from light and follow the supplier’s beyond-use date.

Educational reference only. Not medical advice — follow the instructions from your clinician or pharmacy.

Quick answers: Tesamorelin doses in units

With a 5 mg vial mixed with 2 mL of bacteriostatic water (2.5 mg/mL), on a U-100 insulin syringe:

How many units is 1 mg of tesamorelin?
40 units (0.4 mL)
How many units is 1.5 mg of tesamorelin?
60 units (0.6 mL)
How many units is 2 mg of tesamorelin?
80 units (0.8 mL)

Educational maths only, not a dose recommendation. Use the calculator above for your own vial, water volume and syringe.

Quick math example

A 5 mg vial mixed with 2 mL gives 2,500 mcg/mL. A 1 mg dose is 0.4 mL, which equals 40 units on a U-100 syringe.

Tesamorelin reconstitution reference

U-100 units to draw for each common Tesamorelin dose, by vial size, reconstituted with 2 mL of bacteriostatic water. Change the water volume in the calculator above to recompute for your own setup.

VialConcentration1 mg1.5 mg2 mg
2 mg1 mg/mL100 u(1 mL)150 u(1.5 mL)200 u(2 mL)
5 mg2.5 mg/mL40 u(0.4 mL)60 u(0.6 mL)80 u(0.8 mL)
10 mg5 mg/mL20 u(0.2 mL)30 u(0.3 mL)40 u(0.4 mL)

Swipe the table to see every dose →

Educational reference only — not a dose recommendation. Units assume a U-100 insulin syringe (100 units = 1 mL on U-100). Always confirm against your own vial, diluent, and clinician or pharmacy instructions.

Tesamorelin dosage chart: units for 5 mg and 10 mg vials

Unlike most research peptides, tesamorelin has an approved label to anchor a dosage chart: the FDA-approved products for HIV-associated abdominal fat are labelled at 1.4 mg once a day under the skin for Egrifta SV and 1.28 mg once a day for Egrifta WR (the original Egrifta was 2 mg a day). Outside that use, community protocols most often cite 1 to 2 mg a day. This page does not recommend a dose; the chart shows what each amount looks like on a U-100 syringe for the usual vial set-ups.

Daily dosing means a vial is used over many days, so pick a water volume that puts your dose on a clear mark and gives a vial that finishes within its beyond-use date. A 10 mg vial holds five 2 mg doses, or seven at the Egrifta SV dose of 1.4 mg.

  • 5 mg + 2 mL (2.5 mg/mL): 1 mg = 40 units · 2 mg = 80 units
  • 10 mg + 2 mL (5 mg/mL): 1 mg = 20 units · 2 mg = 40 units
  • 10 mg + 3 mL (3.33 mg/mL): 1 mg = 30 units · 2 mg = 60 units

Tesamorelin dosage chart in U-100 units

Dose5 mg + 2 mL2.5 mg/mL10 mg + 2 mL5 mg/mL10 mg + 3 mL3.33 mg/mL
500 mcg20 u(0.2 mL)10 per vial10 u(0.1 mL)20 per vial15 u(0.15 mL)20 per vial
1 mg40 u(0.4 mL)5 per vial20 u(0.2 mL)10 per vial30 u(0.3 mL)10 per vial
1.5 mg60 u(0.6 mL)3 per vial30 u(0.3 mL)6 per vial45 u(0.45 mL)6 per vial
2 mg80 u(0.8 mL)2 per vial40 u(0.4 mL)5 per vial60 u(0.6 mL)5 per vial

Swipe the table to see every vial →

Educational reference only — not a dose recommendation. Units assume a U-100 insulin syringe (100 units = 1 mL on U-100); “per vial” is how many of that dose the vial holds, before the small dead-space loss on each draw. Confirm against your own vial label, diluent, and clinician or pharmacy instructions.

How the tesamorelin calculation works

Tesamorelin vials are labelled in milligrams, while daily doses are usually discussed in milligrams or micrograms. The calculator converts the vial total to mcg, divides by your BAC water volume to find concentration, then divides your target dose by that concentration.

Because tesamorelin is reconstituted and then used over several days, picking a water volume that keeps your daily dose on clear unit marks reduces the chance of a misread between doses.

  • 5 mg vial = 5,000 mcg total
  • 5,000 mcg / 2 mL = 2,500 mcg per mL
  • 1,000 mcg target = 0.4 mL draw

Tesamorelin 5 mg vial with 2 mL example

A 5 mg tesamorelin vial mixed with 2 mL gives 2.5 mg/mL, or 2,500 mcg/mL.

A 1 mg (1,000 mcg) dose is 0.4 mL, which equals 40 units on a U-100 syringe. A 2 mg dose would be 0.8 mL, or 80 units.

  • 5 mg / 2 mL = 2.5 mg/mL
  • 1,000 mcg / 2,500 mcg per mL = 0.4 mL = 40 U-100 units
  • 2,000 mcg / 2,500 mcg per mL = 0.8 mL = 80 U-100 units

Tesamorelin 5 mg vial: units per dose (2 mL BAC water)

U-100 units to draw for each common Tesamorelin dose, by vial size, reconstituted with 2 mL of bacteriostatic water. Change the water volume in the calculator above to recompute for your own setup.

VialConcentration1 mg1.5 mg2 mg
5 mg2.5 mg/mL40 u(0.4 mL)60 u(0.6 mL)80 u(0.8 mL)

Swipe the table to see every dose →

Educational reference only — not a dose recommendation. Units assume a U-100 insulin syringe (100 units = 1 mL on U-100). Always confirm against your own vial, diluent, and clinician or pharmacy instructions.

Use less water for a smaller tesamorelin draw

If a 40-unit draw feels large, reconstituting the same 5 mg vial in 1 mL doubles the concentration to 5 mg/mL.

At 5 mg/mL a 1 mg dose halves to 0.2 mL, or 20 units. Less bacteriostatic water raises the concentration and shrinks every draw — re-run the calculator after changing the water amount so the units match.

  • 5 mg / 1 mL = 5 mg/mL → 1 mg = 0.2 mL = 20 units
  • Less BAC water = higher concentration = smaller draw
  • Keep the draw within your syringe's capacity

How much BAC water for a 10 mg tesamorelin vial

A 10 mg vial in 2 mL gives 5 mg/mL, so a 1 mg dose is 0.2 mL (20 units), 1.5 mg is 0.3 mL (30 units) and 2 mg is 0.4 mL (40 units). In 3 mL it is about 3.33 mg/mL, putting 1 mg at 30 units and 2 mg at 60 units.

A 10 mg vial holds about ten 1 mg doses or five 2 mg doses. With daily dosing that is one to two weeks per vial, so check the reconstituted beyond-use date covers it.

  • 10 mg / 2 mL = 5 mg/mL → 1 mg = 20 units, 2 mg = 40 units
  • 10 mg / 3 mL = 3.33 mg/mL → 1 mg = 30 units, 2 mg = 60 units
  • About ten 1 mg doses or five 2 mg doses per vial

Tesamorelin 10 mg vial: units per dose (2 mL BAC water)

U-100 units to draw for each common Tesamorelin dose, by vial size, reconstituted with 2 mL of bacteriostatic water. Change the water volume in the calculator above to recompute for your own setup.

VialConcentration1 mg1.5 mg2 mg
10 mg5 mg/mL20 u(0.2 mL)30 u(0.3 mL)40 u(0.4 mL)

Swipe the table to see every dose →

Educational reference only — not a dose recommendation. Units assume a U-100 insulin syringe (100 units = 1 mL on U-100). Always confirm against your own vial, diluent, and clinician or pharmacy instructions.

How to reconstitute a 10 mg tesamorelin vial

A 10 mg vial is the common research size and has no manufacturer label, so the water volume is your choice. 2 mL gives 5 mg/mL, where 1 mg is 20 units; 3 mL gives about 3.33 mg/mL, where 1 mg is 30 units and small doses are easier to read. Because the vial is used over a week or more, pick the volume that keeps your daily dose on a clear mark.

Wipe both stoppers with alcohol, draw the bacteriostatic water, and let it run slowly down the inside wall of the vial instead of onto the powder. Swirl or roll gently until the solution is clear — do not shake it — then label the vial with the date and the water you added.

  • 10 mg + 2 mL = 5 mg/mL → 1 mg = 20 units, 1.4 mg = 28 units, 2 mg = 40 units
  • 10 mg + 3 mL = 3.33 mg/mL → 1 mg = 30 units, 2 mg = 60 units
  • Seven 1.4 mg doses or five 2 mg doses per 10 mg vial

Tesamorelin 10 mg vial: units per dose (3 mL BAC water)

U-100 units to draw for each common Tesamorelin dose, by vial size, reconstituted with 3 mL of bacteriostatic water. Change the water volume in the calculator above to recompute for your own setup.

VialConcentration1 mg1.5 mg2 mg
10 mg3.33 mg/mL30 u(0.3 mL)45 u(0.45 mL)60 u(0.6 mL)

Swipe the table to see every dose →

Educational reference only — not a dose recommendation. Units assume a U-100 insulin syringe (100 units = 1 mL on U-100). Always confirm against your own vial, diluent, and clinician or pharmacy instructions.

Egrifta SV and Egrifta WR: how the approved vials are mixed

The two approved products are mixed differently and their labels say they cannot be swapped for each other. Egrifta SV is a 2 mg vial mixed with 0.5 mL of the sterile water supplied (4 mg/mL); the dose is 1.4 mg, which is 0.35 mL or 35 units on a U-100 syringe. Egrifta WR is an 11.6 mg vial mixed with 1.3 mL of the bacteriostatic water supplied (8 mg/mL); the dose is 1.28 mg, which is 0.16 mL or 16 units, and one vial gives seven daily doses.

Their storage rules after mixing are opposite to what most people assume. The Egrifta SV label says to inject immediately after mixing, throw away what is left, and not refrigerate or freeze the mixed solution. The Egrifta WR label says to keep the mixed vial at room temperature (20–25 °C) and discard it 7 days after mixing.

  • Egrifta SV: 2 mg + 0.5 mL sterile water = 4 mg/mL → 1.4 mg = 0.35 mL = 35 units
  • Egrifta WR: 11.6 mg + 1.3 mL BAC water = 8 mg/mL → 1.28 mg = 0.16 mL = 16 units
  • SV: use immediately · WR: room temperature, discard after 7 days

How long tesamorelin lasts after reconstitution

For the approved products, the label decides: Egrifta SV is used immediately after mixing, and Egrifta WR is kept at room temperature and discarded 7 days after mixing. Research vials have no label, so there is no tested shelf life after mixing; keep the vial refrigerated and protected from light, and follow the beyond-use date your supplier or pharmacy gives. Multi-dose vials in clinical settings are commonly discarded 28 days after first puncture unless the manufacturer says otherwise.

Frequently asked questions

What is the tesamorelin dosage in units?
The approved tesamorelin products are labelled at 1.4 mg once daily (Egrifta SV) and 1.28 mg once daily (Egrifta WR); community protocols often cite 1–2 mg a day. This page does not recommend a dose. From a 10 mg vial in 2 mL (5 mg/mL), 1 mg is 20 units and 2 mg is 40 units on a U-100 syringe; from a 5 mg vial in 2 mL those double to 40 and 80 units.
Does this calculator tell me what tesamorelin dose to take?
No. It converts a target you already have into a draw volume and syringe units. Dosing decisions belong with a licensed clinician or pharmacy, and tesamorelin's approved use is specific.
How much BAC water should I use for a tesamorelin vial?
Use the volume your protocol or pharmacy specifies. A common choice is 2 mL per 5 mg vial (2.5 mg/mL), which puts a 1 mg dose at 0.4 mL or 40 units. Less water concentrates the vial and shrinks the draw; more water does the opposite.
Is tesamorelin an approved medicine?
Tesamorelin has an FDA-approved formulation for a specific indication, but grey-market research vials are not that approved product. This page only explains the reconstitution math and makes no treatment recommendation.
How long is tesamorelin good for after reconstitution?
It depends on the product. Egrifta SV is injected immediately after mixing and the rest is thrown away; Egrifta WR is kept at room temperature and discarded 7 days after mixing. Research vials have no label shelf life, so keep them refrigerated and follow your supplier's beyond-use date.
Does tesamorelin need to be refrigerated after reconstitution?
Not the approved products: the Egrifta SV label says not to refrigerate or freeze the mixed solution, and Egrifta WR is stored at room temperature after mixing. Research vials are usually kept refrigerated because there is no label telling you otherwise.
How do I mix a 2 mg tesamorelin vial?
Egrifta SV, the approved 2 mg vial, is mixed with the 0.5 mL of sterile water supplied, giving 4 mg/mL; the 1.4 mg dose is 0.35 mL (35 units). A research 2 mg vial has no label, and 1 mL of bacteriostatic water gives 2 mg/mL, where 1 mg is 50 units.

Primary sources

Background references for this calculator. PepSync does not make clinical claims; these citations support the educational context only.

  1. 1
    EGRIFTA SV (tesamorelin for injection) prescribing information
    DailyMed / National Library of Medicine · n.d.
  2. 2
    EGRIFTA WR (tesamorelin for injection) prescribing information
    DailyMed / National Library of Medicine · 2025
Full reference list
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