Educational information only — not medical advice. Most peptides here are not FDA-approved.

Compare peptides

Choose two or three to see them side by side. Everything comes from each peptide’s own page.

Peptide 1

Peptide 2

Peptide 3 (optional)

Compare	Ipamorelin A selective growth-hormone secretagogue with a clean side-effect profile.	Sermorelin The first 29 amino acids of natural GHRH — once an FDA-approved drug.
Category	Growth Hormone Axis	Growth Hormone Axis
Evidence	3/5Phase 2 human trials for postoperative ileus; GH-release effects are well documented in humans.	4/5Human trials supported its former approval for pediatric GH deficiency. Evidence for adult anti-aging use is small and older.
FDA status	Not FDA-approved	Formerly FDA-approved (Geref) — discontinued 2008
WADA (sport)	Banned	Banned
Also known as	NNC 26-0161	Geref, GRF 1-29 NH2, Sermorelin acetate
How it works	Ghrelin-receptor (GHS-R1a) agonist producing a short, pulsatile GH release. Often paired with a GHRH analog (CJC-1295, sermorelin) for a stronger combined pulse.	Binds the GHRH receptor on the pituitary, triggering a short pulse of growth hormone and a rise in IGF-1. The body's normal feedback (somatostatin) still applies, so levels stay within a more natural range than injected GH.
Half-life	About 2 hours	About 10–20 minutes; the GH pulse lasts a few hours
Commonly reported doses	Standard: 200 mcg, 1–3× daily (often bedtime) Higher: 300 mcg, 2× daily	Community: 300 mcg, once daily at bedtime
Route	Subcutaneous	Subcutaneous
Good once mixed	~30 days in the fridge	~21 days in the fridge
Top side effects	Head rush / flushing right after injection Mild water retention Increased hunger	Facial flushing right after injection Injection-site pain, redness or swelling Headache
Lowest price per mg	$3.00 (10 mg vial, 40% off)	$3.60 (10 mg vial, 40% off)
Latest lab purity	99.79% (lot IPA0002)	99.15% (lot SER0001)
	Full page Shop ↗	Full page Shop ↗

Popular comparisons