Every line above is re-verified against the primary agency source before each update. What the July 2026 FDA vote did and did not do →
What sermorelin is
Sermorelin is a synthetic fragment of growth-hormone-releasing hormone — the first 29 amino acids, the shortest piece that retains activity. It acts on the pituitary to stimulate the body’s own growth hormone release rather than supplying growth hormone directly, which means its effect depends on the pituitary still being able to respond.
The regulatory contradiction worth understanding
Sermorelin sits in an unusual position. It is essentially untouched by the FDA compounding restrictions that capture CJC-1295, ipamorelin, BPC-157 and injectable GHK-Cu — because it was once an approved drug, which gives it a different lawful route. At the same time WADA names it explicitly and bans it at all times. The same molecule is comparatively unencumbered in US compounding and a permanent doping violation in sport. FDA compoundability and sporting legality are independent axes.
What the human evidence covers
Real, but old, small and almost entirely paediatric. The study behind the growth indication enrolled 110 previously untreated prepubertal children with growth hormone deficiency, open-label with no placebo arm, and reported height velocity rising from 4.1 to 7.2 cm per year at twelve months. A separate study in children with radiation-induced deficiency found sermorelin worked, but less well than growth hormone itself in the same children the following year.
What the adult evidence covers
For the uses it is actually sold for today — anti-ageing, body composition, muscle gain, sleep, recovery — there is no adequate randomised controlled trial evidence. A 2020 review of growth hormone secretagogues concluded that clinical efficacy data largely remain lacking. One registered trial of GHRH in older adults was terminated with five participants enrolled. Raising growth hormone and IGF-1 is a measurable effect; it is not by itself a demonstrated benefit.
How far up the evidence hierarchy this reaches
A former FDA approval and genuine registered trials — but the trials were in children with growth hormone deficiency, and for every adult use it is marketed for the evidence drops to nothing.
Where it sits on the compounding pathway
What it is sold for, against what the evidence shows
Marketing claims on the left, in the terms sellers use. What the human literature actually supports on the right.
| Marketed for | What the evidence shows | Verdict |
|---|---|---|
| Increasing the body’s own growth hormone output | Well established — this was the basis of the approved pituitary-function diagnostic product. | Supported |
| Growth in children with growth hormone deficiency | Formerly approved indication, on an open-label study of 110 children. It underperformed growth hormone itself in a head-to-head-in-time comparison. | Supported |
| Anti-ageing, restoring youthful hormone levels | No randomised trial demonstrating any ageing-related clinical outcome. A hormone level rising is a biomarker, not a benefit. | Partly supported |
| Fat loss and lean-mass gain in healthy adults | No adequate randomised trial. A 2020 review found clinical efficacy data largely lacking. | No human evidence |
| Better sleep, recovery, energy, injury healing | No controlled human trials for any of these endpoints. | No human evidence |
| "Not a banned substance" | WADA names sermorelin explicitly. Prohibited at all times, in and out of competition. | Contradicted |
Where to go next
No dosing, cycling, stacking, reconstitution or administration instructions appear anywhere on this site, and this page links to no page selling an unapproved injectable. Questions about how a substance would be used belong with a licensed clinician who has evaluated you.
Sources
- Federal Register — Determination that GEREF (sermorelin acetate) injection was not withdrawn for reasons of safety or effectiveness, 78 FR 14095, 2013
- Thorner M et al. Once daily subcutaneous GHRH therapy accelerates growth in GH-deficient children during the first year. J Clin Endocrinol Metab, 1996
- Sinha DK et al. Beyond the androgen receptor: growth hormone secretagogues in body composition management. Transl Androl Urol, 2020
- WADA — 2026 Prohibited List, section S2.2.4