GHRP-2

Reliably increases GH in human studies. Not FDA-approved but widely used in anti-aging clinics. Increases appetite and cortisol/prolactin more than GHRP-6.

A rough internal score reflecting quantity, quality, and consistency of human evidence. Not a clinical recommendation.

Multiple human pharmacologic studies confirm dose-dependent GH release. Also raises cortisol and prolactin mildly. Used clinically in some countries as a GH stimulation test.

• Potent GH secretagogue effect confirmed in humans
• Useful in diagnostic GH stimulation testing
• Preserves pulsatile GH release pattern

Typical protocols: 100–300 mcg subcutaneously 2–3 times daily, often before meals or at bedtime.

• Increased appetite
• Elevated cortisol and prolactin
• Water retention
• Injection-site reactions

Not FDA-approved. May increase cortisol and prolactin. Appetite stimulation can be significant.

GH-releasing effect is confirmed but clinical outcome data are limited. Long-term safety unknown.

• Muscle40
• Recovery30
• Energy20