Generic Peptides Sermorelin 2, 5 and 10 mg Research Vials

Sermorelin, also written as GHRH (1-29), is a synthetic peptide analogue of growth hormone-releasing hormone. It is a 29 amino acid polypeptide that reproduces the 1-29 fragment of the natural human hormone, the shortest part that keeps full activity. Its formula is C149H246N44O42S and its mass is about 3358 g/mol. It was developed as a diagnostic agent for growth hormone secretion and is no longer manufactured as a prescription drug.

It binds the growth hormone-releasing hormone receptor and mimics full length GHRH, so the pituitary releases its own growth hormone in a burst. The response is limited by the inhibitory hormone somatostatin, which is why the release follows a natural rhythm rather than a flat level. That is a different route from the ghrelin receptor secretagogues, and the two classes can be combined in the same protocol.

Sermorelin is no longer an approved product, so the current material is research grade and has no label-based safety profile. As a peptide injected under the skin it carries the usual route risks, including injection-site reactions, and any compound that raises growth hormone can affect fluid balance and blood sugar. Effects of this class are documented in the clinical literature for the old prescription product; the vial sold here is not that product.

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 sermorelin in class S2.2.4, growth hormone releasing factors, in the GHRH and analogues group. Substances in category S2 are prohibited at all times, in and out of competition, and the section works on a catch-all basis, so an unnamed GHRH analogue falls under it as well. Tesamorelin and CJC-1295 are named in the same line.

Both are GHRH analogues, but sermorelin is the plain 1-29 fragment, while CJC-1295 carries extra substitutions and, in the DAC version, a drug affinity complex that extends its presence in the body. In practice the short fragment gives a brief pulse and the modified analogue gives a longer one, which is why they are used against each other as the short and long arms of a kinetics study rather than as interchangeable products.

All three 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 is available on the 5 mg vial, and orders are handled within one to two business days. Stock and prices are shown live on the page.