GHRP-6 Dosage Calculator
Calculate GHRP-6 injection volumes. Pre-filled for a 10mg vial with 2ml BAC water (5,000 mcg/ml). Typical 100mcg dose = 0.02ml = 2 units.
GHRP-6 is a growth hormone-releasing hexapeptide that stimulates GH release through ghrelin receptor activation. Unlike Ipamorelin, it also increases appetite and raises cortisol and prolactin — effects that limit its use for most researchers. Commonly referenced research doses are 100mcg per injection, 2–3 times daily.
For a 10mg GHRP-6 vial: add 2ml of bacteriostatic water → concentration is exactly 5000 mcg/ml. A commonly referenced 100mcg research dose = 0.02ml (2 units) on a 100-unit syringe.
Dose Reference Table
Pre-calculated for a 10mg vial + 2ml BAC water = 5,000 mcg/ml concentration. Using a 100-unit (1ml) insulin syringe.
| Dose | Inject Volume (ml) | Syringe Units |
|---|---|---|
| 50mcg | 0.010 ml | 1 units |
| 100mcg | 0.020 ml | 2 units |
| 150mcg | 0.030 ml | 3 units |
| 200mcg | 0.040 ml | 4 units |
| 300mcg | 0.060 ml | 6 units |
About GHRP-6
GHRP-6 (Growth Hormone Releasing Peptide-6) is a synthetic hexapeptide that stimulates GH secretion from the pituitary gland. It was one of the first GHRPs developed and remains a well-studied reference compound in this class. GHRP-6 acts primarily through the ghrelin receptor (GHSR-1a) to amplify pulsatile GH release.
A notable characteristic of GHRP-6 compared to other GHRPs like Ipamorelin is its strong appetite-stimulating effect. By activating ghrelin receptors — and ghrelin is the body's primary "hunger hormone" — GHRP-6 can significantly increase appetite, which may be either a desired or undesired effect depending on the research context.
GHRP-6 is supplied in 10mg vials. Using 2ml of bacteriostatic water gives 5,000 mcg/ml. Research doses typically range from 100–300mcg per injection, administered 2–3 times daily. GHRP-6 is often combined with a GHRH analogue (CJC-1295, Sermorelin) for a synergistic effect on GH release.
In research, GHRP-6 is typically administered in a fasted state, as elevated blood glucose blunts GH response. The half-life is 15–60 minutes.
How this calculator works
Every result comes from the same three formulas used for any lyophilized peptide: concentration (mcg/ml) = vial mg × 1,000 ÷ BAC water ml; injection volume (ml) = desired dose mcg ÷ concentration; syringe units = injection volume ml × 100 on a U-100 syringe.
For the preset GHRP-6 setup on this page: a 10mg vial mixed with 2ml of bacteriostatic water gives a concentration of 5,000 mcg/ml. A 100mcg dose then needs 0.02ml, which is 2 units on a 100-unit insulin syringe.
The full methodology, with worked examples and the assumptions behind each formula, is on the methodology page.
Accuracy & limitations
The arithmetic itself is exact — the same inputs always produce the same output. Real-world accuracy depends on things outside the calculator: actual vial contents can vary slightly from the labeled amount within manufacturing tolerance, the BAC water volume should be measured carefully, and syringe readings are taken at the bottom edge of the plunger. Reconstituted peptides also degrade over time (the common guidance is to use within about 28 days refrigerated), which the math does not model. This tool does arithmetic only — it does not recommend doses, and it is not medical advice.
Last reviewed: September 2026 · Content, formulas and sources checked by Kanika