GHRP-2

A lab-made peptide that makes the body release growth hormone. It is not approved, and the FDA lists it as a safety risk for big pharmacies.

FDA statusNot approved

Not approved in the US for anything. On the FDA Category 2 risk list for outsourcing pharmacies.

Proof it works in people for muscle, fat loss, or anti-agingEarly

Hormone and growth studies in kids and sick adults. Nothing on muscle.

Safety data in peopleVery little

Small, short studies, plus FDA reports of serious problems.

Three separate grades: the law (not approved, on an FDA risk list), proof (small hormone studies only), and safety data (very little). Low proof does not by itself mean it is unsafe, and the reverse is also true.

By the Peptide Science Desk Editorial TeamFact-checked against FDA and official sources · Oct 28, 2026Not yet reviewed by a licensed clinician. How we check facts

What is it?

GHRP-2 (drug name pralmorelin) is a lab-made chain of 6 building blocks. It was built in the 1990s as a stronger cousin of GHRP-6. It sticks to the same spot as ghrelin, the "hunger hormone," and that makes the pituitary gland in the brain let out a burst of growth hormone.

Why do people use it?

Gym users hope it builds muscle, burns fat or deepens sleep. None of that has been tested in a real trial. Its one real medical job is in Japan, where doctors use a GHRP-2 shot as a quick test to see if an adult makes enough growth hormone.

Does it really work?

Not shown for muscle, fat or aging. In 15 short children, a GHRP-2 nose spray sped growth from 3.7 to 6.1 cm a year, but there was no comparison group. In very sick men in intensive care, a 5-day drip brought growth hormone and IGF-1 back to normal. Those are hormone results, not muscle results.

Studies in people

We found 6 small studies in people. None tested muscle, fat loss or aging in healthy adults.

Study design	People	What they measured	What they found	Year	Journal	PubMed
Small study, no comparison group	15 short children	Growth speed	Nose spray sped growth from 3.7 to 6.1 cm a year. Well tolerated.	1997	J Endocrinol	PMID 9390009
Small study, no comparison group	10 children with low growth hormone	Hunger and weight over 12 months (pills)	7 of 10 felt hungrier. Weight for height did not change in a meaningful way.	2003	J Pediatr Endocrinol Metab	PMID 14513874
Test study, single shot in a vein	6 young and 6 older adults	Growth hormone and other hormones	Growth hormone rose a lot. Prolactin, ACTH and cortisol rose a little.	1997	Peptides	PMID 9285939
Randomized study, 5-day drip	33 men in long-term intensive care	Growth hormone and IGF-1	Woke up the growth hormone system and brought IGF-1 back to normal.	2002	Clin Endocrinol (Oxf)	PMID 12030918
Diagnostic test study	77 healthy adults and 58 patients	Whether a single shot can spot low growth hormone	Healthy people peaked near 84.6, patients near 1.36 (µg/L). The test told them apart.	2007	Eur J Endocrinol	PMID 17609397
Diagnostic test study (Japan)	71 adults with pituitary tumors	GHRP-2 test vs the standard insulin test	The GHRP-2 test was an acceptable stand-in for the standard test.	2013	Endocr J	PMID 23079545

We read each of these 6 papers on PubMed on October 28, 2026.

Is it safe? Side effects

It raises more than growth hormone. In a 1997 study it also raised prolactin and the stress hormones ACTH and cortisol.
It can make you hungry: 7 of 10 children taking it for a year said so.
The FDA knows of reports of serious problems in people who got GHRP-2: needing more insulin for blood sugar, deaths of very sick study patients, infections, and pancreas swelling. It is not proven GHRP-2 caused them.
No one checks what is inside vials sold online.

Is it legal in the US?

GHRP-2 is not an FDA-approved medicine.

On September 29, 2023, the FDA put GHRP-2 shots and nose sprays on its "Category 2" list of risky ingredients for big "outsourcing" pharmacies (503B).
As of October 26, 2026, it is still on that list.
For regular pharmacies, it is on "Category 3," meaning people asked for it without enough support. WADA bans it in sports.

What this means for GHRP-2

Category 2 means the FDA saw big safety worries with it as a pharmacy ingredient. (FDA)
Vials sold "for research" are not medicine. The FDA has warned sellers of such products. (FDA)
Bringing it into the US for yourself is, in most cases, illegal, the FDA says. (FDA)

Banned in sports? Drug tests

Banned in sports.

Yes. WADA bans GHRP-2 at all times, in and out of competition. It is in section S2.2.4 of the 2026 list: GH-releasing peptides, "GHRP-2 (pralmorelin)".

Check work, NCAA, and military rules for GHRP-2

Talk to your doctor

If you think your growth hormone is low, ask a hormone doctor (endocrinologist) about a proper test. Bring up any plan to use GHRP-2, because it can change blood sugar and other hormones. We never share doses or tell you where to buy. Print our doctor questions sheet.

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Not medical advice. Medical disclaimer.