Sermorelin
Also known as: GHRH (1-29), GRF 1-29
A GHRH analogue with a real medical past, but the anti-ageing and physique claims made for it today outrun the evidence.
Regulatory status: Historically used in medicine as a growth-hormone-releasing agent, including as a test of pituitary function and in assessing growth in children, though the branded product was later discontinued in the US.
What it is
Sermorelin is a shortened synthetic version of natural growth-hormone-releasing hormone (GHRH). Unlike most compounds in this section, it has a genuine medical history, which the modern "anti-ageing clinic" marketing leans on heavily.
Composition
It corresponds to the active fragment of GHRH. It has been produced as a pharmaceutical agent, though the branded product was later discontinued in the US.
Proposed mechanism
As a GHRH analogue, it stimulates the pituitary to release the body's own growth hormone, rather than supplying growth hormone directly.
Claimed benefits
Reversed ageing, more muscle, better sleep and recovery, the standard growth-hormone-axis promises.
What the evidence shows
Silver· human data. It can stimulate the body's own growth-hormone release, which is well documented, and it was historically used as a test of pituitary function and in assessing growth in children. But the leap from that to reversing ageing or building muscle in healthy adults is not supported by good long-term human trials, which is where the modern marketing overreaches.
Legal & regulatory status
It has a real medical past but the branded product was discontinued; today's anti-ageing use sits outside that context. As a GHRH analogue it is on the WADA Prohibited List and banned in sport at all times.
Known risks & unknowns
Used medically it was given under supervision; self-directed use for anti-ageing or physique goals lacks that oversight and the same evidence base. Research-chemical versions also carry purity and contamination risks.
Sources
Frequently asked questions
- What is sermorelin?
- It is a shortened synthetic version of natural growth-hormone-releasing hormone (GHRH). Unlike most compounds in this section, it has a genuine medical history, having been used as a diagnostic agent and, at one time, in paediatric growth contexts before the branded product was discontinued.
- Does sermorelin work for anti-ageing or muscle?
- It can stimulate the body's own growth-hormone release, which is well documented. But the leap from that to reversing ageing or building muscle in healthy adults is not supported by good long-term human trials, which is where the modern 'anti-ageing clinic' marketing overreaches.
- Is sermorelin safe?
- It has been used medically under supervision, but self-directed use for anti-ageing or physique goals is a different context, without that oversight or the same evidence base. Products from research-chemical suppliers also carry purity and contamination risks.
- Is sermorelin banned in sport?
- Yes. As a GHRH analogue it falls under the WADA Prohibited List's peptide-hormone and growth-factor category and is banned at all times.
Related compounds
- CJC-1295 (Unproven)
An evidence-tiered explainer on CJC-1295: a long-acting GHRH analogue marketed for muscle and anti-ageing, with only early data and no proven fitness benefits.
- Tesamorelin (Gold)
An evidence-tiered explainer on tesamorelin (Egrifta): the one GH-releasing peptide with FDA approval and robust trials, for a medical use, not fitness.
- Ipamorelin (Unproven)
An evidence-tiered explainer on ipamorelin: a GH secretagogue marketed for muscle, fat loss and anti-ageing, with unproven real-world benefits.