5 Growth Hormone Peptides & Why Sermorelin Is the One You Can Be Prescribed

Growth hormone peptides do not contain growth hormone. They signal your pituitary gland to release more of its own, by copying either growth hormone-releasing hormone (GHRH) or ghrelin, a second release signal. That is the appeal of HGH peptides: your body keeps its own rhythm instead of receiving a fixed dose.

Regulation is the problem: most names sold online were never approved, and the FDA has flagged several for safety. Arbor explains how sermorelin works in sermorelin peptide therapy explained.

Below, five growth hormone peptides and secretagogues are compared on what the FDA has said about each and what human trials measured.

• Sermorelin — How it works: GHRH copy, injection; FDA status today: Approved 1997 as Geref, discontinued 2008 (not for safety), now compounded; Best human evidence: Small trials raised GH and IGF-1
• Tesamorelin — How it works: GHRH copy, injection; FDA status today: FDA-approved for HIV-related abdominal fat only; Best human evidence: Two large RCTs for its approved use
• Ipamorelin — How it works: Ghrelin copy, injection; FDA status today: On FDA's safety-risk list for 503B compounding; Best human evidence: One phase 2 trial, no benefit over placebo
• CJC-1295 and ipamorelin — How it works: Long-acting GHRH copy plus ipamorelin; FDA status today: FDA has flagged serious adverse events with CJC-1295; Best human evidence: No published trial of the blend
• Ibutamoren (MK-677) — How it works: Oral ghrelin mimic, not a peptide; FDA status today: On FDA's safety-risk list; Best human evidence: 2-year RCT raised lean mass, not strength

On tesamorelin vs sermorelin, both copy GHRH, but only tesamorelin holds a current FDA approval, and for a narrow use. On ipamorelin vs sermorelin, ipamorelin works through the ghrelin pathway and sits on FDA's safety-risk list. Arbor's sermorelin vs tesamorelin compared and sermorelin vs CJC-1295 go deeper.

Tesamorelin can also be prescribed, but only for HIV-associated abdominal fat. Ipamorelin, CJC-1295 and ibutamoren sit on FDA's compounding safety pages. That leaves the sermorelin peptide as the option a licensed clinician can prescribe for adults, filled by a licensed U.S. pharmacy.

Is sermorelin FDA approved? Not today. The FDA approved it as Geref in 1997, the maker discontinued it in 2008, and a 2013 FDA determination found it was not withdrawn for reasons of safety or effectiveness. Compounded sermorelin is not FDA-approved.

Documented sermorelin benefits come from small studies. In one 16-week study of older adults, skin thickness increased and men gained lean mass. A 2006 commentary, sermorelin for adult growth hormone insufficiency, argues it suits adults better than growth hormone itself, but it is an opinion piece, not a trial. In a published review, flushing and pain at the injection site were the most common side effects.

Arbor sermorelin injections start at $99 a month, after a clinician reviews your health history and decides whether it is appropriate. The program supports your levels under clinician guidance rather than promising a specific result.

Start with what can be prescribed, then what has human data. That narrows a long online list to two, and only one is for general adult use.

• Check FDA status first. Anything on FDA's safety-risk lists, or sold for research use only, is not a safe workaround.
• Ask what the evidence measured. Raising IGF-1 is not the same as more strength, energy or a longer life.
• Expect a clinician to screen you. Your history decides whether growth hormone signaling fits.

If sermorelin is prescribed, the routine matters as much as the peptide. See how to take sermorelin.