Comparison
Sermorelin vs Ipamorelin
Two leading anti-aging GH peptides with different pathways.
Reviewed by Dr. Sarah Mitchell, PharmD
Pathway
GHRH receptor
Ghrelin/GHS receptor
Half-Life
~10–20 minutes
~2 hours
Side Effects
Very minimal
Very minimal
GH Release
Amplifies natural pulses
Triggers new GH pulses
FDA History
Was FDA-approved (Geref, discontinued)
Never FDA-approved
Clinic Adoption
777 US clinics (16%)
248 US clinics (5.2%)
Best For
Baseline IGF-1 restoration
Clean GH pulse without sides
Synergy
Outstanding with Ipamorelin
Outstanding with Sermorelin
Our Verdict
Sermorelin is a GHRH analog (primes pituitary) while Ipamorelin is a GHRP (triggers release). Both are clean and safe for long-term use. Combined, they produce significantly greater GH output than either alone — the 'golden ratio' stack.