Tesamorelin Reconstitution Calculator
Water, concentration & dose-to-units charts
Work out how much water to add to a tesamorelin vial and what each dose becomes in syringe units — for example, a 5 mg vial in 2 mL is 2.5 mg/mL, so a 2 mg dose is 0.8 mL, or 80 units on a U-100 syringe. The approved product (Egrifta) is reconstituted with sterile water; always confirm against the product label and your prescriber.
How tesamorelin reconstitution works
Tesamorelin is supplied as a freeze-dried (lyophilized) powder that you dissolve before measuring a dose. The concentration is the vial strength divided by the water you add — a 5 mg vial in 2 mL is 2.5 mg/mL.
Once you know the concentration, your dose volume is the dose divided by the concentration, and on a U-100 insulin syringe that volume × 100 gives the unit marks to draw. The approved tesamorelin product (Egrifta, for HIV-associated lipodystrophy) uses sterile water and is injected daily; the standard dose is 2 mg.
Reconstitution chart: concentration by tesamorelin vial size and water added
| Vial size | +1 mL | +2 mL | +3 mL | +5 mL |
|---|---|---|---|---|
| 1 mg | 1 mg/mL | 0.5 mg/mL | 0.33 mg/mL | 0.2 mg/mLBest |
| 2 mg | 2 mg/mL | 1 mg/mL | 0.67 mg/mL | 0.4 mg/mL |
| 5 mg | 5 mg/mL | 2.5 mg/mL | 1.67 mg/mL | 1 mg/mL |
| 10 mg | 10 mg/mL | 5 mg/mL | 3.33 mg/mL | 2 mg/mL |
Tesamorelin dose to syringe units (by concentration)
| Dose | 1 mg/mL | 2 mg/mL | 5 mg/mL |
|---|---|---|---|
| 1 mg | 1.0 mL → 100 | 0.5 mL → 50 | 0.2 mL → 20Best |
| 2 mg | 2.0 mL → 200* | 1.0 mL → 100 | 0.4 mL → 40 |
How to reconstitute a tesamorelin vial
Storage & safety
Storage and in-use time depend on the diluent. Sterile-water-reconstituted products are typically used immediately, while a bacteriostatic-water vial can be kept refrigerated for multiple draws — always follow your product leaflet for which applies and how long the prepared vial lasts.
This page is educational and handles only reconstitution and unit math. Follow your prescriber and the product label, and ask your pharmacist when in doubt.
Frequently Asked Questions
5 mg in 1 mL is 5 mg/mL; in 2 mL is 2.5 mg/mL. With the standard 2 mg dose, 1 mL (5 mg/mL) makes the dose 0.4 mL (40 units), and 2 mL (2.5 mg/mL) makes it 0.8 mL (80 units). Use the chart and your product label.
At 5 mg/mL, 2 mg is 0.4 mL, or 40 units on a U-100 insulin syringe. At 2 mg/mL it is 1.0 mL (100 units). Units = (dose ÷ concentration) × 100.
The approved Egrifta product is reconstituted with sterile water and used promptly. Some research preparations use bacteriostatic water for multi-use vials — follow your specific product’s leaflet.
The approved indication uses 2 mg once daily by subcutaneous injection. Your prescriber sets the dose; this tool only converts it to syringe units.
Yes. Shotlee stores your vial concentration, logs each dose, and sends reminders so you do not have to recompute. It is free.
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