Tesamorelin Reconstitution & Dosage Calculator
This free Tesamorelin calculator turns your vial size, the bacteriostatic water you add, and your target amount into a concentration, a draw volume, and the exact units on a U-100 insulin syringe. Tesamorelin is a growth-hormone-releasing hormone (GHRH) analog handled in small milligram amounts, so the water volume you choose has a large effect on how readable the draw is. This is a measurement tool — it does not recommend an amount.
Tesamorelin reconstitution calculator
Syringe
U-100 insulinPeptide in vial
Target amount
Bacteriostatic water
Email this result to yourself
Quick summary
- Converts vial size (mg), bacteriostatic water (mL), and target amount into concentration, draw volume, and U-100 units.
- Reference math for the 5 and 10 mg vials Tesamorelin is commonly supplied in.
- Educational research and measurement tool only — it does not diagnose, treat, or recommend an amount.
What this Tesamorelin calculator does
This calculator does one job well: it turns your vial size, the amount of bacteriostatic water you add, and your target amount into a concentration (mg/mL), a draw volume (mL), and the matching units on a U-100 insulin syringe. Change any input and the result updates instantly.
Tesamorelin ships as a freeze-dried powder. Before it can be measured into a syringe it has to be reconstituted — dissolved in bacteriostatic water. How much water you add sets the concentration, and the concentration sets how many units each amount works out to. The presets above cover the most common Tesamorelin vial setups; use the custom fields for anything else.
How to use the Tesamorelin calculator
Pick your syringe
Choose the U-100 insulin syringe you'll draw with. Smaller syringes (0.3 mL / 30u) have finer lines, which helps when the draw is small.
Enter your vial and water
Set the milligrams in your Tesamorelin vial and the bacteriostatic water you added. Together these set the concentration.
Set your target amount
Toggle mg or mcg and pick (or type) the amount you're measuring for. The calculator does the conversion for you.
Read the draw
The result panel shows concentration, draw volume, and the exact U-100 units to pull, plus how many doses your vial contains.
Tesamorelin reconstitution math, explained
The math is short. Concentration = vial size ÷ bacteriostatic water. Draw volume = target amount ÷ concentration. Units = draw volume × 100 (a U-100 syringe reads 100 units per mL). The table below shows common Tesamorelin setups and the units for a 1 mg amount at each.
| Vial size | Bac water | Concentration | Units per 1 mg |
|---|---|---|---|
| 10 mg | 1.0 mL | 10 mg/mL | 10 units |
| 10 mg | 2.0 mL | 5 mg/mL | 20 units |
| 10 mg | 2.5 mL | 4 mg/mL | 25 units |
| 5 mg | 1.0 mL | 5 mg/mL | 20 units |
| 5 mg | 2.0 mL | 2.5 mg/mL | 40 units |
Tesamorelin amount-to-units reference
How common amounts convert to U-100 syringe units at two example concentrations. These are arithmetic conversions for reference, not a recommendation of any amount.
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 1 mg | 0.10 mL | 10 units |
| 1.4 mg | 0.14 mL | 14 units |
| 2 mg | 0.20 mL | 20 units |
| 3 mg | 0.30 mL | 30 units |
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 1 mg | 0.20 mL | 20 units |
| 1.4 mg | 0.28 mL | 28 units |
| 2 mg | 0.40 mL | 40 units |
| 3 mg | 0.60 mL | 60 units |
Mixing, color & storage tips
Choose water for a readable draw
Tesamorelin amounts sit in the low milligram range. At 10 mg/mL a 2 mg target is 20 units — easy to read. Adding more water spreads the same amount across more units, which can improve readability at the cost of a larger injection volume.
Mixing without foam
Run the bacteriostatic water slowly down the inside wall of the vial rather than directly onto the powder, then swirl gently. Do not shake — GHRH analogs are peptides and agitation can degrade them.
Storage and vial life
Keep the dry powder cold and dark. Once reconstituted, refrigerate, keep it out of light, and plan around a limited usable window. Do not freeze a reconstituted vial.
Tesamorelin vs other GH-axis compounds
Tesamorelin is a GHRH analog, mechanistically distinct from ghrelin-mimetic secretagogues like Ipamorelin. If you are working with a CJC-1295 / Ipamorelin blend instead, the stack calculator handles per-component math in a shared vial.
Tesamorelin supplies checklist
A simple reconstitution shopping list. Confirm vial size and batch documentation before you buy.
Tesamorelin
- Batch COA on every vial
- Third-party purity tested
- U.S. fulfillment, discreet shipping
Tesamorelin — frequently asked questions
What does this Tesamorelin calculator tell me?
It converts your vial size, bacteriostatic water volume, and target amount into concentration in mg/mL, draw volume in mL, and the matching units on a U-100 insulin syringe. It is a measurement tool, not a recommendation.
Is the Tesamorelin calculator free?
Yes. It runs entirely in your browser, is free, and requires no account or signup.
How much bacteriostatic water do I add to a 10 mg Tesamorelin vial?
That depends on the concentration you want. 10 mg with 1 mL makes 10 mg/mL, so a 2 mg target is 20 units. 10 mg with 2 mL makes 5 mg/mL, so the same 2 mg target becomes 40 units — a larger, easier-to-read draw.
How many units is 2 mg of Tesamorelin?
At 10 mg/mL it is 20 units (0.2 mL). At 5 mg/mL it is 40 units (0.4 mL). Units always depend on your specific concentration, which is why the calculator asks for your exact vial and water volume.
Is Tesamorelin FDA-approved?
Tesamorelin is approved as a prescription drug under the brand name Egrifta for a specific medical indication. Research-grade Tesamorelin sold as a research chemical is not that product and is supplied research-use-only, not for human or veterinary use.
How long does a reconstituted Tesamorelin vial last?
Store it refrigerated and dark and plan around a limited usable window. Do not freeze a mixed vial. Keep the dry, unmixed powder cold for longer storage.
Is this medical advice?
No. This page and calculator are for education and research planning only. They do not diagnose, treat, or recommend an amount.
