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Hexarelin, 10 mg. Hexarelin, also called examorelin, is a hexapeptide acting on the ghrelin receptor and the one member of its class with its own published human dose-response curve.

What is in this vial

All three brands of Hexarelin here come in the same 10 mg vial, so the choice between them is a choice of manufacturer and price, not of quantity. The powder has no concentration of its own: it is set when you add the water. This vial with 2 ml of bacteriostatic water gives 5 mg per millilitre, and with twice that volume, half as much.

The conversion of an amount into insulin syringe units is worked through in the guide on syringe units, and the rules that change once the powder is dissolved are in storage.

Bio-Peptide as the manufacturer

Bio-Peptide has the widest catalogue of the three brands we stock: it is the only one supplying glutathione, NAD+, GHK-Cu, MOTS-C, SLU-PP-332 and semaglutide, so an order from this manufacturer can usually be filled from one supplier. Every vial carries a code under the hologram and a batch certificate, and how to check both is described on the verification page.

What the evidence says

The 1996 study reported dose-dependent rises in growth hormone, prolactin and cortisol, with the growth hormone curve reaching a plateau. Combined with GHRH in a small dose it gave no cortisol rise. The full account, with the sources and the limits, is on the Hexarelin page, and the background in the guide on the map of the differences in this class.

We publish no dosing schedules. Sold as research material, not as a medicine.

Hexarelin is the only peptide in the GHRP group with its own published human dose-response curve, from 1996. Bio-Peptide fills it in a 10 mg vial and also supplies the other three members of the class, so the whole comparison can be made within one brand.

Concentration in this vial

Water added Concentration Per unit on a U-100 syringe
1 ml 10 mg/ml 100 mcg
2 ml 5 mg/ml 50 mcg
5 ml 2 mg/ml 20 mcg

The table is arithmetic and nothing else: it converts the 10 mg in this vial into the concentration you get for a chosen volume of bacteriostatic water. It is not a dosing recommendation, and we publish none.

This vial next to the other Hexarelin vials

The same compound is sold here in two other versions: Genheal, 10 mg and Nouveaux Ltd., 10 mg. The molecule is identical in each; what differs is the manufacturer. All three hold the same amount, so the choice here is the manufacturer and its batch certificate, not the size.

Also from Bio-Peptide in this group

Within Growth hormone peptides, Bio-Peptide also supplies CJC-1295 5 mg, GHRP-2 10 mg and GHRP-6 10 mg.

What the 1996 human study showed

In December 1996 the Journal of Clinical Endocrinology and Metabolism published a paper on the hormonal response to rising doses of hexarelin in healthy adult men. It was a dose-response study, which tests not just whether a substance acts, but how its effect depends on the amount given.

Hexarelin raised growth hormone clearly. It also raised prolactin and cortisol, and each of the three rises depended on the dose. The growth hormone response reached a plateau: above a certain level, more hexarelin stopped adding to the effect.

The finding that changes how this peptide is seen: in the same study, growth hormone releasing hormone given together with a small dose of hexarelin produced a large growth hormone release with a moderate rise in prolactin and no rise in cortisol. The cortisol rise is tied to the dose of hexarelin alone, not built into the molecule.

Why this argues for combining rather than raising the dose

GHRP peptides and GHRH analogues act through two different pituitary receptors, and stimulating both at once gives a larger growth hormone release than a single compound. The 1996 study adds something more: with such a combination it is possible to stay with a small amount of hexarelin and avoid the effect that larger amounts bring. That is why hexarelin is more often placed next to a GHRH analogue such as CJC-1295, Mod GRF 1-29 or sermorelin than used alone.

Where hexarelin sits among the other GHRPs

Peptide Effect on cortisol and prolactin What sets it apart
Hexarelin Dose-dependent A human dose-response study from 1996
GHRP-2 Dose-dependent The highest growth hormone peak of the three compared in our guide
GHRP-6 Dose-dependent The strongest appetite stimulation
Ipamorelin Negligible The only selective molecule in the group

We do not write that hexarelin is the strongest in its group, because none of the sources we checked contains a direct human comparison of its strength with GHRP-2. On the World Anti-Doping Agency list for 2026 it appears in section S2.2.4 under the name examorelin, prohibited at all times.

Two ampoules, two concentrations

The Bio-Peptide box holds two 1 ml solvent ampoules. Dissolving the whole 10 mg in one millilitre gives 100 mcg per syringe unit; in two millilitres it gives 50 mcg per unit and a scale twice as fine. The choice is made once, when dissolving, and a second ampoule also helps if the first one breaks when opened. Keep the solution in the fridge at 2 to 8 degrees Celsius, away from light.

Who this vial is for

You plan to work with a small amount of hexarelin next to a GHRH analogue and want a fine scale: two ampoules give you 50 mcg per unit. You would rather have nothing to prepare: the Nouveaux Ltd. cartridge has the solvent in a second chamber. You want to avoid any effect on cortisol regardless of dose: choose ipamorelin.

Hexarelin's second receptor: how it was found

Hexarelin acts through the ghrelin receptor, like the other GHRP peptides. In 2002 a team in Montreal described in Circulation Research its second target, independent of the ghrelin receptor. The researchers labelled rat heart cell membranes with a radioactive hexarelin derivative and checked what it bound to.

What was found Result
Mass of the bound protein about 84,000, a protein identical to CD36
Where CD36 occurs heart muscle cells and small blood vessels
Action in isolated hearts a dose-dependent rise in coronary perfusion pressure
Hearts of mice without CD36 no such effect

The last row is the proof that it was CD36 that was responsible for the effect on the vessels. So hexarelin has two separate routes to the heart: through the ghrelin receptor and through CD36. No other GHRP peptide in the shop has a second route described like this.

What a study in patients with heart disease showed

In 2002 the European Journal of Heart Failure described hexarelin in patients with very weak left ventricular function. In five people with ischaemic cardiomyopathy, ejection fraction rose from 22.6 to 26.2 percent. In eight with dilated cardiomyopathy it hardly changed, although growth hormone rose similarly in both groups. The authors explain the difference by the fact that in ischaemic disease more living muscle remains that can respond.

The heart studies involved a single intravenous dose and small groups. Hexarelin is not a treatment for heart disease. All the results are described in the guide Hexarelin and the heart.

Sources: Bodart et al., Circulation Research 2002, Imazio et al., European Journal of Heart Failure 2002.

Questions

How much Hexarelin is in this vial?

10 mg of lyophilised powder from Bio-Peptide, in one vial.

What concentration does 2 ml of water give?

5 mg per millilitre, which is 50 mcg per unit on a U-100 insulin syringe. Other volumes are in the table above.

Is this the same molecule as the Genheal vial?

Yes. Hexarelin is the same compound in every vial here, and both hold 10 mg. What differs is the manufacturer and the batch certificate that comes with it.

Verification and delivery

Every vial carries a code under the hologram and comes from a batch with a certificate of analysis; how to check both is described in check your product. We ship within Poland and abroad. Outside Poland shipping costs 30 EUR paid in advance or 80 EUR cash on delivery, the same for every country: shipping and payments.