What makes Ipamorelin different from other GH peptides?
Ipamorelin is one of the most selective growth hormone releasing peptides (GHRPs). Unlike other GHRPs like GHRP-6 or GHRP-2, it stimulates GH release without significantly increasing cortisol, prolactin, or appetite. This selectivity makes it one of the mildest options with fewer side effects.
Why is Ipamorelin often stacked with CJC-1295?
This combination activates two complementary pathways: CJC-1295 works through the GHRH receptor to increase the number of pituitary cells releasing GH, while Ipamorelin works through the ghrelin receptor to increase GH output per cell. Together, they produce a synergistic effect greater than either peptide alone, often called the "CJC/Ipa stack."
What are the most common side effects?
Ipamorelin is considered one of the gentlest GH peptides. Possible side effects include mild headache, water retention, and tingling in extremities. Unlike GHRP-6, it typically does not cause significant hunger increases. Injection site reactions may occur but are usually minor and temporary.
How does Ipamorelin compare to GHRP-6 and GHRP-2?
Ipamorelin is more selective than both GHRP-6 and GHRP-2. GHRP-6 causes strong hunger increases and can raise cortisol. GHRP-2 is more potent but also affects cortisol and prolactin more. Ipamorelin provides a cleaner GH release with minimal impact on other hormones, making it preferred for those prioritizing side effect profile over raw potency.
What is Ipamorelin?
Ipamorelin is a synthetic pentapeptide (5 amino acids) that stimulates growth hormone release by mimicking ghrelin at the pituitary gland. It was developed specifically to be selective for GH release without affecting other hormones. This makes it popular for those wanting GH benefits with minimal side effects.
What is the typical Ipamorelin dosage?
A common research dosage is 300 mcg per injection, administered AM and/or PM on a 5 days on, 2 days off schedule (8 weeks on, 8 weeks off). Best taken on an empty stomach. It's often combined with a GHRH like CJC-1295 no DAC for enhanced effects.
What benefits does Ipamorelin provide?
By elevating GH levels, Ipamorelin may support fat loss, lean muscle growth, improved sleep quality, faster recovery, enhanced skin health, and anti-aging effects. Many users report improved sleep as an early benefit. Results develop gradually over weeks to months of consistent use.
Does Ipamorelin cause hunger like GHRP-6?
No, Ipamorelin's selectivity means it doesn't significantly increase appetite. While it does work on ghrelin receptors, its effect on hunger is minimal compared to GHRP-6 or even GHRP-2. This makes it suitable for those on calorie-restricted diets or who want to avoid increased appetite.
How long does reconstituted peptide last?
Once mixed with bacteriostatic water, peptides remain stable for up to 4 weeks when refrigerated at 2-8°C (36-46°F). Unopened powder can last 1+ year in the freezer. Get our complete Storage & Travel Guide.
Is this peptide legal to purchase?
Peptides sold "for research purposes only" are legal to purchase in the US, but are not FDA-approved for human use outside of specific medical applications. Always consult a healthcare provider before use.
New to peptides?
Take our Peptide Match tool to find the best peptide for your goals. You can also read our Complete Guide to Peptides to learn the basics.