Generic Peptides GHRP-2 5 and 10 mg Lyophilized Vial Options

GHRP-2, also called pralmorelin, is a synthetic hexapeptide that acts as an agonist at the ghrelin receptor, the growth hormone secretagogue receptor. It is the same sequence used in a Japanese diagnostic product for growth hormone deficiency. Its mass is about 818 g/mol and its formula is C45H55N9O6.

It binds the ghrelin receptor on pituitary cells and triggers a pulse of growth hormone release rather than supplying hormone directly. Published research found that an acute dose markedly increased plasma growth hormone, and the same work reported a reliable increase in hunger and food intake. That appetite effect is one reason the peptide is studied beyond the growth axis.

Because GHRP-2 in humans has been used as a short diagnostic test rather than a long treatment, long-term safety data is limited. Reported effects of the secretagogue class include hunger, flushing, headache, drowsiness and injection-site reactions, and hormone pulses can also raise cortisol and prolactin. Treat it as an unstudied research material.

Add sterile or bacteriostatic water down the side of the vial and swirl, do not shake, then divide the milligrams on the vial by the millilitres added to read mg per mL. Keep the sealed powder at 2-8 C or -20 C and let it reach room temperature before opening. The mixed solution stays at 2-8 C and is used within about four weeks.

Yes. The WADA Prohibited List 2026 names GHRP-2, pralmorelin, in class S2.2.4 among growth hormone releasing factors and GH-releasing peptides. Substances in that class are prohibited in and out of competition, so it cannot be used by any athlete subject to anti-doping rules at any point in the season.

Both are ghrelin receptor agonists and both raise growth hormone, but they are different hexapeptides with different selectivity, and the reported appetite effect is stronger with GHRP-6. Researchers keep them in separate arms when they want to compare how each one shapes the pulse. Both are named in the same WADA class and are banned in sport.

Both vial sizes are listed on this page as research material with international and U.S. domestic checkout. International shipping runs about 35 dollars with a transit window of four to ten days, the domestic option about 25 dollars with up to five days, and orders are handled within one to two business days.