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GHRP-2
PerformanceSingleAn older-generation GHRP studied for robust GH release. More potent than ipamorelin but also raises cortisol and prolactin slightly.
Half-life
0.5 h
Common dose
100 – 300 mcg
Dosing frequency
Daily
Administration
Subcutaneous
How it works
GHRP-2 binds the ghrelin receptor on the pituitary, triggering GH release. It also moderately stimulates appetite and elevates cortisol/prolactin compared with ipamorelin.
Protocol notes
Research dosing is 100–300 mcg subcutaneously 1–3 times daily. Cycles of 8–12 weeks. Often paired with a GHRH analog for synergistic effect.
Reported side effects
Hunger spikes, mild cortisol/prolactin elevation, water retention, injection-site reactions.