Sermorelin
Also known as GRF 1-29, Geref
Sermorelin is the first 29 amino acids of growth hormone releasing hormone, which is the shortest fragment that retains the parent hormone's activity. It was formerly marketed as Geref and used diagnostically to assess pituitary function, then withdrawn from the market for commercial reasons.
Who has Sermorelin in stock
| Supplier | Listing | Price | Per mg | |
|---|---|---|---|---|
| Baltic PeptidesBest valueEU and UK | Sermorelin 10mg | €54.99 | €5.50 | In stock, go |
| Peptides UKUK | Sermorelin 2mg | £13.95 | £6.98 | In stock, go |
| HiPeptidesUK | Sermorelin | £39.99 | – | In stock, go |
Live stock is checked hourly at 10 suppliers. A further 7 vetted suppliers have no live feed yet, so we never show them as in stock. We earn a commission from some supplier links when you buy. It costs you nothing extra and never changes the order, which is by price per mg.
What it has been studied for
- Growth hormone secretion in diagnostic testing
- Paediatric growth hormone deficiency, historically
- Comparative potency against full-length GHRH
Evidence level: Human trials. Human data exists, but read the details above before assuming it applies to you.
What happened in human trials
Was licensed for children with growth hormone deficiency, then withdrawn in 2008 for commercial reasons. Recorded effects were injection site pain and swelling, flushing, headache and dizziness.
Prohibited in drug-tested sport under the World Anti-Doping Code.
UK legal status
No current UK marketing authorisation. Prohibited in sport under WADA class S2.
Handling
Lyophilised powder. Short half-life relative to the DAC-modified analogues, which is the practical difference people are usually asking about. Commonly 2mg or 5mg per vial.
Questions
Why was Geref withdrawn?
Commercial reasons rather than a safety withdrawal. Diagnostic use declined as alternative testing became standard.
How does sermorelin differ from CJC-1295?
CJC-1295 is a modified analogue designed to resist breakdown and, in the DAC form, to bind albumin for a far longer half-life. Sermorelin is the unmodified 1-29 fragment and clears quickly.
Before you buy anything, run the four-question check for red flags that apply to you.