Tesamorelin 5 mg reconstitution calculator
How much bac water for tesamorelin 5 mg?
There’s no single right amount: the water sets the strength, not how much tesamorelin is in the vial, so use the volume on your pharmacy’s instructions. For example, 1 mL makes 5 mg/mL and 2 mL makes 2.5 mg/mL; the table below shows what each volume means on a U-100 syringe.
Your tesamorelin vial
Syringe
1 mL · 2-unit marks
Work backwards
Find the water for a given reading in units.
Enter your numbers to see the result.
Enter your numbers
This is arithmetic, not medical advice. Confirm with your prescriber or pharmacist.
How our calculator worksAdvanced
Vial capacityOptional
The volume printed on the vial or its box, not the mg. We’ll tell you if the water won’t fit.
What each volume makes
| Water | Strength | Each unit | 1 mg is |
|---|---|---|---|
| 1 mL | 5 mg/mL | 50 mcg | 20 units |
| 2 mL | 2.5 mg/mL | 25 mcg | 40 units |
| 2.5 mL | 2 mg/mL | 20 mcg | 50 units |
Examples; use the volume on your pharmacy’s instructions. Units are on a U-100 syringe: 100 units = 1 mL.
About the 5 mg vial
Between the two Egrifta vials
The current FDA labels describe two tesamorelin vials, and neither is 5 mg: Egrifta SV holds 2 mg and Egrifta WR holds 11.6 mg (Egrifta SV label, Egrifta WR label). A 5 mg vial holds 2.5 times an Egrifta SV vial and less than half (about 43%) of an Egrifta WR vial. Because no approved product comes in this size, no label sets its water volume: use the volume on your pharmacy’s label. With 1, 2 or 2.5 mL, each unit holds 50, 25 or 20 mcg, so a reading worked out for either Egrifta vial doesn’t carry over. For the more common size, see the tesamorelin 10 mg calculator.
The 7-day rule is Egrifta WR's, not your vial's
Egrifta WR’s label keeps the mixed vial at room temperature, 20°C to 25°C (68°F to 77°F), says not to freeze it and discards it 7 days after mixing. Egrifta SV is injected right after mixing, and its label says not to refrigerate or freeze the solution (Egrifta WR label, Egrifta SV label). Those rules belong to those products and their own diluents. A 5 mg vial you mix follows the beyond-use date and storage on your pharmacy’s label: ask how long it lasts and where to keep it before you mix, and see how long reconstituted peptides last.
Sources for these notes
- EGRIFTA SV (tesamorelin) for injection, prescribing informationDailyMed, U.S. National Library of Medicine, 2024 (opens in a new tab)
- EGRIFTA WR (tesamorelin) for injection, prescribing informationDailyMed, U.S. National Library of Medicine, 2025 (opens in a new tab)
- EGRIFTA WR (tesamorelin) for injection, prescribing informationDailyMed, U.S. National Library of Medicine, 2025 (opens in a new tab)
- EGRIFTA SV (tesamorelin) for injection, prescribing informationDailyMed, U.S. National Library of Medicine, 2024 (opens in a new tab)
About tesamorelin
US regulatory status
FDA-approved for a different use
FDA-approved as Egrifta WR and Egrifta SV (Theratechnologies) only to reduce excess abdominal fat in adults with HIV and lipodystrophy; the labels say it is not indicated for weight loss. The first Egrifta approval was on November 10, 2010. Tesamorelin sold online as a “research” peptide is an unapproved drug, and the FDA has sent warning letters to sellers. WADA prohibits it at all times.
As of
Sources (5)
- EGRIFTA WR (tesamorelin) for injection, prescribing informationDailyMed, U.S. National Library of Medicine, 2025 (opens in a new tab)
- EGRIFTA SV (tesamorelin) for injection, prescribing informationDailyMed, U.S. National Library of Medicine, 2024 (opens in a new tab)
- Drugs@FDA: EGRIFTA (BLA 022505)U.S. Food and Drug Administration (opens in a new tab)
- Warning letter: TXP Innovations LLC dba Tex Peptides (MARCS-CMS 735067)U.S. Food and Drug Administration, 2026 (opens in a new tab)
- World Anti-Doping Code International Standard: Prohibited List 2026World Anti-Doping Agency, 2026 (opens in a new tab)
How this tesamorelin calculator works
This calculator starts from the 5 mg in your vial. Add the water you mix it with and the dose your prescriber gave you; it divides the mg by the mL to get the strength, then turns your dose into mL and units on a 30, 50 or 100-unit syringe.
Peptinote never suggests a dose or a water volume. The example volumes are there to make the math easy to check, not as advice. For the full method, see the peptide calculator.
Questions people ask
How much bac water for a 5 mg vial of tesamorelin?
There’s no single right amount: use the volume on your pharmacy’s instructions. The water only sets the strength; the vial still holds 5 mg however much you add. With 1 mL it’s 5 mg/mL (50 mcg per unit), with 2 mL 2.5 mg/mL (25 mcg per unit) and with 2.5 mL 2 mg/mL (20 mcg per unit). Enter your volume and prescribed dose above to get the units.
How do I reconstitute tesamorelin 5 mg?
Wipe both stoppers with alcohol and let them dry. Draw the volume of bacteriostatic water your pharmacy specifies into a new syringe, add it slowly down the inside of the vial, then swirl gently until clear; don’t shake. Label it with the strength: 5 mg in 1 mL is 5 mg/mL. Full steps: how to reconstitute peptides.
What are the steps to reconstitute tesamorelin 5 mg?
Mixing your tesamorelin 5 mg vial takes the bacteriostatic water your pharmacy specifies and a new sterile syringe. Add the water slowly against the glass and swirl, never shake, until the liquid is clear. If it stays cloudy or has particles, don’t use it; call your pharmacy. Then write the strength and date on the vial and store it as the label says (how to store peptides).
Can Peptinote tell me how many units to take?
No. Peptinote never suggests a dose. Enter the dose your prescriber gave you, and the calculator shows how to measure it: the units, the mL and where the line sits on your syringe, with every step of the math. If you aren’t sure what your dose is, ask your prescriber or pharmacist before drawing anything. How our calculator works.
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Every result is plain arithmetic from formulas we publish in full and check with automated tests. Peptinote doesn’t suggest doses and never sells or links to sellers of peptides.