Growth Hormone Secretagogues

Ipamorelin

Also known as: Ipamorelin acetate

The cleanest, most selective GH secretagogue available.

Half-Life
~2 hours
Administration
Subcutaneous injection
Category
Growth Hormone Secretagogues
Citations
2 studies

What is Ipamorelin?

Ipamorelin is a selective growth hormone secretagogue and ghrelin receptor agonist. It is considered the 'cleanest' GHRP because it stimulates GH release with virtually no effect on cortisol, prolactin, or ACTH — making it ideal for long-term use. It is almost always stacked with CJC-1295 for synergistic GH pulses.

Mechanism of Action

Ipamorelin binds to the ghrelin receptor (GHSR-1a) in the pituitary gland, triggering a strong, selective pulse of growth hormone release. Unlike GHRP-6 and GHRP-2, it does not significantly stimulate cortisol or prolactin, making it far more suitable for frequent dosing.

Ipamorelin Dosing Protocol

200–300 mcg per injection, 2–3 times daily (ideally before bed, upon waking, and pre-workout). Most commonly stacked with CJC-1295 (without DAC) at the same dose and timing. Cycle: 12–16 weeks on, 4–8 weeks off.

Administration Routes
Subcutaneous injection
Half-Life
~2 hours

Want a personalized protocol? Tell PepBot your goals, health status, and experience level for a custom Ipamorelin protocol.

Ipamorelin Benefits

Increased GH and IGF-1 levels
Improved body composition (fat loss + muscle gain)
Enhanced recovery and sleep quality
Anti-aging effects
Improved skin quality
Bone density improvement
No cortisol or prolactin spike

Side Effect Profile

Mild water retention initially. Occasional mild hunger (much less than GHRP-6). Rare: tingling or numbness. Extremely well-tolerated for long-term use.

Ipamorelin Stacking Guide

Ipamorelin works synergistically with these compounds. Click any to learn more, or ask PepBot to build you a complete stack.

Research & Citations

Frequently Asked Questions about Ipamorelin

Should I take Ipamorelin with or without food?
Take on an empty stomach — food (especially carbohydrates) blunts GH release. Wait at least 2 hours after eating. The pre-bed dose is the most important as it amplifies the natural nocturnal GH pulse.
Ipamorelin vs GHRP-6 — which is better?
Ipamorelin is cleaner and better for long-term use. GHRP-6 produces a stronger GH pulse but also significantly increases cortisol, prolactin, and hunger. For most users, Ipamorelin is the better choice unless maximum GH stimulation is the priority.

Still have questions about Ipamorelin?

PepBot has encyclopedic knowledge of Ipamorelin — dosing, stacking, interactions, latest research, and personalized protocols. Ask anything.