Hexarelin Reconstitution Calculator

Hexarelin is a synthetic hexapeptide growth hormone secretagogue — essentially a more powerful relative of GHRP-6 — that activates the ghrelin receptor (GHS-R1a) to trigger a large, fast pulse of your own growth hormone. It is not a steroid, and not identical to GHRP-6 even though it's built on the same backbone; it's a research peptide, not an approved drug. Among the common GHRPs, hexarelin produces the strongest acute GH release per dose.

In research and community reports, hexarelin is dosed in micrograms — commonly around 100–200 mcg per injection, subcutaneously, one to a few times a day on an empty stomach, with GH peaking roughly 30 minutes later. Crucially, it is run in cycles (often 4–8 weeks on, then a break) rather than continuously, because its effect fades quickly with daily use. These are reference figures from the literature, not an approved regimen, and suitability is a clinical decision.

Add bacteriostatic water slowly down the side of the dry vial and swirl — never shake. For example, a 2 mg vial + 1 mL of water gives 2 mg/mL (2,000 mcg/mL); a 100 mcg dose is then 0.05 mL, which is 5 units on a U-100 insulin syringe. Use the calculator above to match your real vial size (2 mg and 5 mg are common) and target dose. Doses are in micrograms, so measure carefully — small volume errors are a large share of the dose.

Hexarelin's signature problem is rapid desensitization (tachyphylaxis): with continued daily use the ghrelin receptor downregulates and the GH response can fall by roughly half or more within a few weeks. This is exactly why it's cycled with off-periods, or rotated with a gentler secretagogue like ipamorelin while the receptor recovers — running it nonstop mostly buys side effects, not more GH. It's the one trait that most separates hexarelin from the other GHRPs: the highest peak, but the least durable.

Despite a reputation as the "strongest" GHRP, the research picture is a trade-off: hexarelin raises cortisol and prolactin more than any common GHRP and desensitizes fastest, so raw potency doesn't translate into better sustained results. It is not a steroid and nothing like trenbolone — it's a peptide that signals your pituitary, not an androgen. It does have one genuinely unique feature: it binds the cardiac CD36 receptor and has shown cardioprotective effects in animal studies, though that isn't clinically proven. It's not FDA-approved and is banned by WADA; store the dry vial cold and dark, and once reconstituted keep it refrigerated and use within a few weeks.