Sermorelin
Also known as GRF 1-29, Geref
A peptide that tells your body to make more of its own growth hormone. It used to be a prescription drug in the US.
Quick facts
- Status
- Not an approved medicine
- Evidence
- Previously approved; limited data for adult use
- Taken as
- Injection under the skin
- Common sizes
- 5 mg, 10 mg
- Category
- Growth hormone secretagogue
How it works
It copies the brain signal (GHRH) that tells the pituitary gland to release growth hormone.
What people use it for
- Raising growth hormone
- Sleep and recovery (claimed)
What the research shows
- Was approved to test and treat growth hormone deficiency in children, then taken off the market.
- Little good data in adults.
Side effects & risks
- Redness at the injection site
- Flushing and headache
- Banned in sport
Is it legal?
Was approved in the US (Geref) for diagnosing and treating growth hormone deficiency in children, but the product was withdrawn from the market. No sermorelin product is currently an approved medicine in the EU or US. Prohibited in sport (WADA Prohibited List).
Storage & safe handling
- Mix with bacteriostatic water: let it run slowly down the inside of the vial and swirl gently — never shake.
- Store the mixed vial in the fridge and follow the use-by period on the label.
- Wipe the vial top with alcohol and use a new sterile needle and syringe every time.
- Rotate injection sites so the same spot is not used again and again.
- Put used needles in a sharps container, not the household bin.
- Get medical help for redness that spreads, fever, swelling or trouble breathing.
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Sources: FDA records for Geref (sermorelin acetate); WADA Prohibited List.
Last updated 12 October 2026. Information — not medical advice. PepTimer does not replace a doctor. Many peptides are not approved medicines in the EU, UK or US. Talk to a qualified healthcare provider before starting, changing or stopping any treatment.
Last updated 12 October 2026. Information — not medical advice. PepTimer does not replace a doctor. Many peptides are not approved medicines in the EU, UK or US. Talk to a qualified healthcare provider before starting, changing or stopping any treatment.