Use this hexarelin calculator to convert vial strength and BAC water volume into a precise draw. Hexarelin is the most potent of the GHRP-class secretagogues; this page handles the unit conversions only.
- Common vial examples
- 2 / 5 mg
- Example dose
- 100 mcg
- Common syringe
- U-100 insulin
- Last reviewed
Storage before and after reconstitution: Lyophilised 2–8°C; reconstituted vial refrigerated and protected from light.
Quick answers: Hexarelin doses in units
With a 5 mg vial mixed with 2 mL of bacteriostatic water (2.5 mg/mL), on a U-100 insulin syringe:
- How many units is 100 mcg of hexarelin?
- 4 units (0.04 mL)
- How many units is 200 mcg of hexarelin?
- 8 units (0.08 mL)
- How many units is 300 mcg of hexarelin?
- 12 units (0.12 mL)
Educational maths only, not a dose recommendation. Use the calculator above for your own vial, water volume and syringe.
Quick math example
A 5 mg vial mixed with 2 mL gives 2,500 mcg/mL. A 100 mcg dose is 0.04 mL, which equals 4 units on a U-100 syringe.
Hexarelin reconstitution reference
U-100 units to draw for each common Hexarelin dose, by vial size, reconstituted with 2 mL of bacteriostatic water. Change the water volume in the calculator above to recompute for your own setup.
| Vial | Concentration | 100 mcg | 200 mcg | 300 mcg |
|---|---|---|---|---|
| 2 mg | 1 mg/mL | 10 u(0.1 mL) | 20 u(0.2 mL) | 30 u(0.3 mL) |
| 5 mg | 2.5 mg/mL | 4 u(0.04 mL) | 8 u(0.08 mL) | 12 u(0.12 mL) |
Swipe the table to see every dose →
Educational reference only — not a dose recommendation. Units assume a U-100 insulin syringe (100 units = 1 mL on U-100). Always confirm against your own vial, diluent, and clinician or pharmacy instructions.
How the hexarelin calculation works
Hexarelin is labelled in milligrams while doses are discussed in micrograms. Concentration is the vial total in mcg divided by water volume; the draw is your target divided by that concentration.
- 5 mg vial = 5,000 mcg total
- 5,000 mcg / 2 mL = 2,500 mcg per mL
- 100 mcg target = 0.04 mL draw
Hexarelin 5 mg vial with 2 mL example
A 5 mg hexarelin vial mixed with 2 mL gives 2.5 mg/mL, or 2,500 mcg/mL.
A 100 mcg dose is 0.04 mL — just 4 units on a U-100 syringe. Draws this small make a U-100 insulin syringe the practical choice.
- 5 mg / 2 mL = 2.5 mg/mL
- 100 mcg / 2,500 mcg per mL = 0.04 mL = 4 units
- 200 mcg / 2,500 mcg per mL = 0.08 mL = 8 units
Hexarelin vs other GHRPs
Hexarelin is the most potent GHRP but is known for faster receptor desensitisation than GHRP-2 or GHRP-6, which is why protocols often keep doses modest. The reconstitution math is identical across the GHRP class — only the vial size and dose differ — so calculate each on its own page.
- Most potent GHRP; desensitises faster
- Same math as GHRP-2, GHRP-6, ipamorelin
- A U-100 syringe keeps small draws readable
Frequently asked questions
Is hexarelin approved as a medicine?
Why are hexarelin draws so small?
How is hexarelin different from ipamorelin?
Primary sources
Background references for this calculator. PepSync does not make clinical claims; these citations support the educational context only.