Kalpa Ipamorelin 5 mg Growth Hormone Research Vial for Labs

It is a lyophilised research vial containing 5 mg of ipamorelin, the pentapeptide also coded NNC 26-0161. It acts at the ghrelin receptor as a growth hormone secretagogue and was selected in early work for selectivity rather than raw potency. No approved medicine contains the peptide, so it is supplied as a laboratory material on the Kalpa peptide range.

It binds the ghrelin receptor on pituitary cells and triggers a growth hormone pulse, the same route as GHRP-2 and GHRP-6. The difference is selectivity: the molecule was designed to avoid the appetite and cortisol signalling seen with less selective secretagogues. Human pharmacokinetic work reports a terminal half-life of about 2 hours and a clearance of 0.078 litres per hour per kilogram.

About 2 hours in human pharmacokinetic work, with a clearance of 0.078 litres per hour per kilogram. That is much longer than the GHRH analogues it is usually compared with, because the peptide resists fast breakdown. The data come from studies of the single peptide and describe the molecule itself, which is why they apply equally to other vials of the same substance.

Two millilitres of bacteriostatic water give 2.5 mg per ml, so 250 mcg measures 0.1 ml on a U-100 syringe, while 1 ml gives 5 mg per ml and halves every volume. Add the solvent down the vial wall and do not shake it, then store the solution at 2-8 C without freezing and observe the use window printed on the vial.

A 2026 review of unregulated growth hormone peptides describes fluid retention, joint discomfort and injection site reactions across the class, including this compound. Those findings cover the group rather than ipamorelin alone, and because no approved product exists there is no patient label with a formal adverse event list. Long-term effects are unknown.

Yes. Ipamorelin is named as an example in class S2 of the WADA prohibited list, the class for growth hormone secretagogues, and it is prohibited at all times in and out of competition. That is a stricter position than the incretin peptides, which appear only in the monitoring programme, so a tested athlete has no permitted use.

Yes. The 5 mg vial is listed on this page with international and U.S. domestic shipping options, and the price charged matches the option you select. Orders are dispatched after payment confirmation. The product is sold strictly for laboratory research and is not a licensed medicine in any country.