Sermorelin vs CJC-1295 + ipamorelin: Which Is Right for You?
Sermorelin is the first 29 amino acids of growth hormone-releasing hormone and was once FDA-approved (Geref) before being discontinued. CJC-1295 plus ipamorelin pairs an investigational long-acting GHRH analog with an investigational ghrelin-receptor agonist; neither component has ever been FDA-approved.
Side-by-side comparison
| Sermorelin | CJC-1295 + ipamorelin | |
|---|---|---|
| What it is | GHRH(1-29) analog | GHRH analog + ghrelin-receptor agonist |
| FDA history | Approved (Geref), later discontinued | Never approved |
| Receptors | GHRH receptor | GHRH receptor + GHS-R1a (ghrelin) |
| Human evidence | Pediatric GH-deficiency trials; small adult studies | Separate early-phase studies of each component; no published trial of the combination |
| Sports anti-doping | Prohibited (WADA S2) | Prohibited (WADA S2) |
Complete comparison (2026)
Key takeaways
- Both approaches try to raise the body's own growth-hormone release rather than replace GH.
- The combination has no published human trial as a product.
- Products sold as "research use only" are not approved for human use.
What are Sermorelin and CJC-1295 + ipamorelin?
Sermorelin is a synthetic peptide made of the first 29 amino acids of human growth hormone–releasing hormone (GHRH); it was once FDA-approved as Geref for diagnosing and treating growth hormone deficiency in children, and that product was later discontinued.
CJC-1295 with ipamorelin is a common vendor pairing of a GHRH analog and a ghrelin-receptor agonist; the pair has not been studied together in trials.
Mechanism differences
Sermorelin binds the pituitary GHRH receptor. CJC-1295 is a modified GHRH analog; the "DAC" version binds albumin to extend its half-life to days. Ipamorelin binds the ghrelin receptor (GHS-R1a), a second route to GH release; animal studies described it as more selective than older GH-releasing peptides.
Effectiveness
Sermorelin was approved for diagnosing and treating growth-hormone deficiency in children. A 2006 study of CJC-1295 with DAC in healthy adults reported dose-dependent, sustained increases in GH and IGF-1. Ipamorelin was tested by its developer for post-operative ileus. No published trial tested CJC-1295 with ipamorelin together.
Side effect profiles
Sermorelin labeling listed injection-site reactions, flushing and headache. Early CJC-1295 studies reported injection-site reactions, flushing and headache. Evidence on the combination's safety is absent.
Dosing & administration
No current FDA label exists for any of these. We don't publish doses; see our vial-math pages for reconstitution arithmetic only.
Cost
Compounded sermorelin is offered by some clinics; CJC-1295/ipamorelin is sold as a "research" blend. Verified vendor listings are on the compound pages.
FDA & regulatory status
Sermorelin: approved, then discontinued for commercial reasons. CJC-1295 and ipamorelin: never approved.
Who should choose which
There is no evidence base to choose between them for any health purpose. A clinician can discuss approved growth-hormone treatments where indicated.
What the evidence does not show
- Long-term safety of either approach in adults.
- Any benefit of the CJC-1295 + ipamorelin combination in a published human trial.
Frequently asked questions
Is sermorelin FDA-approved?
It was, as Geref, but the branded product was discontinued. Compounded sermorelin is not an FDA-approved product.
Is CJC-1295 with ipamorelin legal?
Neither is approved. They are sold as "research use only" products, which are not for human consumption.
Are they banned in sport?
Yes. WADA prohibits growth-hormone releasing factors, including GHRH analogs and GH secretagogues.
References
- Prolonged stimulation of growth hormone (GH) and insulin-like growth factor I secretion by CJC-1295, a long-acting analog of GH-releasing hormone, in healthy adults
- Sermorelin: a review of its use in the diagnosis and treatment of children with idiopathic growth hormone deficiency
- Sermorelin — PubChem compound summary (CID 16132413)
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