Tesamorelin Calculator
Dosage and reconstitution math for Tesamorelin. A stabilized GHRH analog with an N-terminal modification that increases metabolic stability relative to native GHRH.
Reconstitution calculator
Pre-filled with common defaults for Tesamorelin. Adjust any field to match your own vial.
Show the math
Enter values above to see the step-by-step math.
Free Illustrated Reconstitution Guide (PDF)
8-step visual walkthrough with photos and tips — from gathering supplies to drawing your dose. Educational only — not medical advice.
Tesamorelin dosage calculator
The Tesamorelin dosage calculator above converts a target dose into exact syringe units based on your vial size and how much bacteriostatic water you used to reconstitute it. Tesamorelin is commonly sold in 2 mg, 5 mg, 10 mg vials. The calculator supports both U-100 and U-40 insulin syringes and flags draws that are too large for the syringe barrel or too small to measure accurately. A stabilized GHRH analog with an N-terminal modification that increases metabolic stability relative to native GHRH. Enter your target dose in the calculator above to see the exact number of units to draw.
Tesamorelin dosage chart
| Sample dose | Concentration | Volume to draw | Units on U-100 |
|---|---|---|---|
| 0.13 mg | 2.5 mg/mL | 0.052 mL | 5.2 |
| 0.25 mg | 2.5 mg/mL | 0.1 mL | 10 |
| 0.5 mg | 2.5 mg/mL | 0.2 mL | 20 |
| 1 mg | 2.5 mg/mL | 0.4 mL | 40 |
| 2 mg | 2.5 mg/mL | 0.8 mL | 80 |
Tesamorelin and GHRH peptides
Tesamorelin is a Stabilized GHRH analog. A stabilized GHRH analog with an N-terminal modification that increases metabolic stability relative to native GHRH. The same molecule is the active ingredient in Egrifta, which are FDA-approved prescription medications manufactured by their respective companies. Research-use Tesamorelin is regulated differently and is not approved for human consumption. Other peptides in the GHRH class include CJC-1295 (no DAC) , CJC-1295 with DAC , and Sermorelin .
How to reconstitute Tesamorelin
Reconstituting Tesamorelin is the same unit-conversion process used for any lyophilized peptide:
- Draw your chosen volume of bacteriostatic water into a syringe.
- Inject the bacteriostatic water slowly down the side of the Tesamorelin vial — do not shoot it directly onto the powder.
- Swirl gently until the powder fully dissolves. Do not shake.
- Store the reconstituted vial refrigerated.
- To dose, calculate your draw volume: divide your target dose by the concentration (vial mg ÷ water mL = mg/mL). The calculator above does this automatically.
For Tesamorelin specifically, 2 mg, 5 mg, 10 mg vials are common. A typical reconstitution adds 2 mL of bacteriostatic water, producing a concentration of 2.5 mg/mL for the 5 mg vial size.
Tesamorelin half-life and storage
Published pharmacokinetic studies report a plasma half-life of approximately 26 minutes for tesamorelin.
Lyophilized tesamorelin is typically stored refrigerated. The approved branded product Egrifta has published stability data for the reconstituted solution, typically in the range of several hours at room temperature or longer under refrigeration.
Common Tesamorelin dosing mistakes
- Confusing mg and mcg. 1 mg = 1,000 mcg. Always convert to the same unit before computing the draw.
- Using a U-40 syringe with U-100 math. Same printed mark, 2.5× the physical volume. Always check the syringe label.
- Not labeling the vial. Write the reconstitution date and concentration on the vial the moment you mix it.
- Under-diluting. If your draw is less than about 1 unit, the volume is too small to read accurately — add more bacteriostatic water next time.