Use this GHRP-2 calculator to convert vial strength and BAC water volume into a precise draw. GHRP-2 is a growth-hormone-releasing peptide with a strong GH response and milder hunger effect than GHRP-6; this page covers the math only.
- Common vial examples
- 5 / 10 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: GHRP-2 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 GHRP-2?
- 4 units (0.04 mL)
- How many units is 200 mcg of GHRP-2?
- 8 units (0.08 mL)
- How many units is 300 mcg of GHRP-2?
- 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.
GHRP-2 reconstitution reference
U-100 units to draw for each common GHRP-2 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 |
|---|---|---|---|---|
| 5 mg | 2.5 mg/mL | 4 u(0.04 mL) | 8 u(0.08 mL) | 12 u(0.12 mL) |
| 10 mg | 5 mg/mL | 2 u(0.02 mL) | 4 u(0.04 mL) | 6 u(0.06 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 GHRP-2 calculation works
GHRP-2 is labelled in milligrams while doses are discussed in micrograms. The calculator converts the vial total to mcg, divides by water volume for concentration, then divides your target 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
GHRP-2 5 mg vial with 2 mL example
A 5 mg GHRP-2 vial mixed with 2 mL gives 2.5 mg/mL, or 2,500 mcg/mL.
A 100 mcg dose is 0.04 mL — 4 units on a U-100 syringe. A 200 mcg dose is 0.08 mL, or 8 units.
- 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
GHRP-2 vs GHRP-6
GHRP-2 and GHRP-6 are close cousins with identical reconstitution math. The practical difference is that GHRP-6 causes a strong hunger response while GHRP-2 is milder on appetite, which is why people choose between them. Calculate each on its own page using your actual vial and water amounts.
- GHRP-2: strong GH response, milder hunger
- Same math as GHRP-6 and hexarelin
- Often paired with a GHRH like CJC-1295
Frequently asked questions
Is GHRP-2 approved as a medicine?
Should I stack GHRP-2 with CJC-1295?
Why is the GHRP-2 draw only a few units?
Primary sources
Background references for this calculator. PepSync does not make clinical claims; these citations support the educational context only.