Growth Hormone
Ipamorelin
Nearly always taken alongside CJC-1295 to raise the body's own growth hormone. The appeal is that it's 'cleaner' than older versions — less likely to spike appetite or other hormones. Human trials for this exact use are still thin, though.
Selective GH , almost always paired with CJC-1295.
How well studied
Tier Guide: A = Well studied, B = Some good studies, C = Early evidence & D = Barely studied
Tested in people, but in smaller or fewer studies. A decent picture, just less certain.
How it works
Targets one specific hormone switch to trigger growth hormone release, leaving the appetite and stress-hormone switches alone — unlike older versions.
Selectively stimulates the to trigger GH release, without meaningfully raising cortisol or appetite.
Reported benefits
- Raises GH/IGF-1 with a more selective profile than older secretagogues
- Supports recovery and sleep quality as part of a GH-axis stack
Who it's typically used for
Timeline to results
Dosage
No established self-administration dose — limited controlled human trials for this specific use.
Side effects
- Injection site reactionsreported
- Headachereported
- Elevated IGF-1 — theoretical hormone-sensitive tissue concernmonitoring-relevant, unresolved
Getting it in the UK
Still legal for a doctor to prescribe, but it hasn't been officially approved for this specific use. Uncommon, and comes down to a specialist's own judgement.
MHRA: the UK government body that checks a medicine is safe and actually works before doctors are allowed to prescribe it.
Content freshness
- Last reviewed
- 11 Aug 2026
- Regulatory status last checked
- 11 Aug 2026