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.
Reconstitution reference
U100 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.
| Vial | Concentration | 1 mg | 1.5 mg | 2 mg |
|---|---|---|---|---|
| 2 mg | 1 mg/mL | 100 u(1 mL) | 150 u(1.5 mL) | 200 u(2 mL) |
| 5 mg | 2.5 mg/mL | 40 u(0.4 mL) | 60 u(0.6 mL) | 80 u(0.8 mL) |
| 10 mg | 5 mg/mL | 20 u(0.2 mL) | 30 u(0.3 mL) | 40 u(0.4 mL) |
Educational reference only — not a dose recommendation. Units assume a U100 insulin syringe (100 units = 1 mL on U-100). Always confirm against your own vial, 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
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
Frequently asked questions
Does this calculator tell me what tesamorelin dose to take?+
How much BAC water should I use for a tesamorelin vial?+
Is tesamorelin an approved medicine?+
Primary sources
Full reference listBackground references for this calculator. PepSync does not make clinical claims; these citations support the educational context only.
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- 2Handling and Storage Guidelines for PeptidesBachem · 2024