Tools · Reconstitution math
Peptide Reconstitution & Dose Calculator
Reconstituting a lyophilized vial of sermorelin, ipamorelin, or another peptide turns a dry peptide mass and a volume of bacteriostatic water into a concentration — and then into a small, hard-to-eyeball number of units on a U-100 insulin syringe. This tool does that arithmetic transparently so you can sanity-check what a protocol asks you to draw. It is math, not a dose recommendation.
Read before you use this
This is an educational math tool, not medical advice, and not a recommendation to use any peptide. Many research peptides are not FDA-approved, and their dosing, reconstitution, and injection technique must be directed and supervised by a licensed clinician. Never self-prescribe or adjust a dose on your own. Treat every figure below as a starting point to verify against your prescriber and the product label — confirm the vial strength, the water you added, and the target dose before drawing anything.
Draw on a U-100 insulin syringe
12units
to deliver a 300 mcg dose = 0.12 mL.
- Concentration
- 2.5 mg/mL
- 5 mg ÷ 2 mL
- Volume to inject
- 0.12 mL
- 0.3 mg ÷ 2.5 mg/mL
- Doses per vial
- 16.7
- 5 mg ÷ 0.3 mg
How it is calculated. Concentration = vial (mg) ÷ bacteriostatic water (mL). Volume to inject = dose (mg) ÷ concentration. A U-100 insulin syringe holds 100 units per 1 mL, so units to draw = volume (mL) × 100. Doses per vial = vial (mg) ÷ dose (mg). Worked example: a 5 mg vial reconstituted with 2 mL = 2.5 mg/mL; a 300 mcg dose = 0.12 mL = 12 units, giving about 16.7 doses per vial.
Understand the context first
A number on a syringe is the easy part. Whether a peptide is appropriate, how to store and reconstitute it correctly, and who should avoid it are the parts that actually matter — read these before you reconstitute anything:
This calculator is informational and not medical advice. It performs unit arithmetic only and does not account for your individual health, the specific peptide, injection technique, or clinical appropriateness. Sermorelin is prescription-only after clinician review; many other research peptides are not FDA-approved. Talk to a licensed provider before acting on any number here.