Ipamorelin
A peptide that gently boosts your own growth hormone. Popular because it causes less hunger than older peptides like it.
Quick facts
- Status
- Not an approved medicine
- Evidence
- Limited (few human studies, not for this use)
- Taken as
- Injection under the skin
- Common sizes
- 5 mg, 10 mg
- Category
- Growth hormone secretagogue (experimental)
How it works
It acts on the "hunger hormone" receptor (ghrelin), which also tells the pituitary gland to release growth hormone.
What people use it for
- Raising growth hormone
- Recovery, sleep and body composition (claimed)
What the research shows
- A few human studies, mostly for other purposes (e.g. gut recovery after surgery).
- No good trials for muscle, fat loss or anti-ageing.
Side effects & risks
- Hunger, water retention and tiredness
- Changes in blood sugar
- Banned in sport
Is it legal?
Not an approved medicine in the EU, UK or US. In most countries it is illegal to sell it for use in people. Products labelled "research use only" are not checked for quality or purity. Prohibited in sport (WADA).
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: 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.