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Sermorelin & Men’s Health
6 min read
Updated Oct 28, 2026.
HGH is growth hormone itself. Sermorelin is a signal that asks the pituitary to release its own.
The short version
Sermorelin | HGH (somatropin) | |
|---|---|---|
What it is | A copy of the first 29 amino acids of GHRH, the brain's release signal | Growth hormone itself, made in a lab |
Where it works | The pituitary, which then releases growth hormone | Skips the pituitary |
How levels rise | In pulses, with the body's feedback still on | A set dose, outside that feedback |
How US patients get it | Compounded by a licensed pharmacy, with a prescription. Not FDA-approved | Approved products, prescribed for specific diagnosed conditions |
Most common side effect | Pain, redness or swelling at the shot spot | Swelling from fluid, joint pain |
Tested sport | Banned | Banned |
Signal vs hormone
The brain makes growth hormone releasing hormone (GHRH). It tells the pituitary to release growth hormone.
Sermorelin is a lab-made copy of the first 29 amino acids of GHRH, the part that carries the message. Its label describes it as raising growth hormone "by stimulating the pituitary gland to release GH."¹ It clears fast, with a half-life of about 11 to 12 minutes.¹ It delivers a message, then it's gone.
HGH skips that step. It is the finished hormone, injected. The pituitary isn't asked.
The feedback brakes
The body's growth hormone system runs on a loop. When levels climb, feedback slows release.
A 2018 review of drugs that prompt the body's own growth hormone release, sermorelin among them, says they cause pulsatile release "subject to negative feedback," which may help prevent levels from running too high.² The same review says some of the drawbacks of injected growth hormone are believed to come, in part, from that feedback being bypassed.² It also notes that few long-term, well-controlled studies exist.²
How each is prescribed
HGH. Approved growth hormone products are prescribed for specific diagnosed conditions. In adults, growth hormone deficiency usually has to be confirmed with a stimulation test before treatment, per the Endocrine Society.³ Under federal law, knowingly distributing HGH for uses outside authorized treatment of a disease or recognized condition is a crime. FDA says HHS has not authorized it for aging, bodybuilding or athletic enhancement.⁴
Sermorelin. A brand version was FDA-approved in the 1990s, then discontinued by its maker in 2008. FDA later determined it was not withdrawn for reasons of safety or effectiveness.⁵ Today sermorelin is compounded by licensed US pharmacies with a prescription. Compounded drugs are not FDA-approved, and FDA does not verify their safety, effectiveness or quality before they're sold.⁶ So compounded sermorelin is not FDA-approved. A clinician reads your health history before anything is prescribed.
Side effects, side by side
Sermorelin | HGH | |
|---|---|---|
Most common | Pain, swelling or redness at the shot spot, in about 1 in 6 people in label data¹ | Soft tissue swelling, joint pain⁷ |
Also reported | Headache, flushing, dizziness, sleepiness, hives, trouble swallowing, each under 1%.¹ Mild fluid retention in older adults⁸ | Carpal tunnel syndrome, breast tissue growth in men, somewhat higher odds of diabetes or high fasting glucose⁷ |
Who was studied | Children with growth hormone deficiency (label). Small groups of older adults | Healthy older adults, in short trials |
A few more details, each with its limits:
Sermorelin. In label data from 350 patients, 3 stopped because of shot-spot reactions. Many developed antibodies to it, with no clear meaning.¹ In one 14-day study of 10 older men, fasting glucose and blood pressure didn't change.⁹ Ten people is a tiny sample.
The drug class. The 2018 review found these drugs generally well tolerated, with some concern about blood sugar rising through lower insulin sensitivity.²
HGH. A systematic review of trials in healthy older adults found the people given growth hormone more likely to have the side effects above. The authors called its body composition changes small.⁷
Sermorelin isn't for people with active or hormone-sensitive cancer, or during pregnancy or breastfeeding. Diabetes and thyroid conditions call for extra caution. Full list: Sermorelin side effects: an honest list.
Both are banned in sport
The World Anti-Doping Agency's 2026 Prohibited List bans both, in and out of competition. Growth hormone sits in class S2. So do GHRH and its analogues, and sermorelin is named.¹⁰ Anyone in tested sport should skip both.
One isn't a swap for the other
HGH for a diagnosed deficiency runs through specialist testing. Sermorelin is the one Sommar's clinicians consider for adults 40+ who want a clinician-guided way to support the body's own growth hormone. Results vary, and a clinician decides if it fits.
New to it? Start with What is sermorelin? A simple guide. Every price is in What sermorelin costs, all in.
How to start
Take the 2-minute online quiz.
A licensed US clinician reviews it.
Prescribed only if appropriate. It ships free, and you pay nothing unless approved.
More: sermorelin, prescribed online · for men
FAQ
Is sermorelin HGH? No. HGH is growth hormone. Sermorelin is a copy of part of GHRH, the signal that asks the pituitary to release growth hormone.
Is sermorelin safer than HGH? They haven't been compared head to head in long trials. Sermorelin keeps the body's feedback in place, which a review suggests may limit excess growth hormone.² Long-term data for both is limited.
Why is HGH harder to get? Approved uses need a diagnosis, usually with a stimulation test in adults.³ Federal law also restricts distributing HGH outside authorized treatment.⁴
Is sermorelin FDA-approved? Compounded sermorelin is not. A brand version was approved in the 1990s and discontinued in 2008, not for safety or effectiveness reasons.⁵
Is sermorelin banned in sports? Yes. WADA names it on its 2026 list, banned at all times.¹⁰
Sources
Sermorelin acetate for injection, prescribing information (FDA label text, revised Oct 2001). Clinical pharmacology and adverse reactions sections, as reproduced by RxList.
Sigalos JT, Pastuszak AW. The safety and efficacy of growth hormone secretagogues. Sex Med Rev. 2018;6(1):45-53. doi:10.1016/j.sxmr.2017.02.004
Molitch ME, et al. Evaluation and treatment of adult growth hormone deficiency: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2011;96(6):1587-1609. doi:10.1210/jc.2011-0179
US Food and Drug Administration. Import Alert 66-71, citing section 303(e) of the FD&C Act (21 U.S.C. 333(e)).
US Food and Drug Administration. Determination that sermorelin acetate products were not withdrawn from sale for reasons of safety or effectiveness. Federal Register, March 4, 2013. Doc. 2013-04827.
US Food and Drug Administration. Compounding and the FDA: questions and answers. Content current as of Sept 16, 2025.
Liu H, Bravata DM, Olkin I, et al. Systematic review: the safety and efficacy of growth hormone in the healthy elderly. Ann Intern Med. 2007;146(2):104-115.
Merriam GR, et al. Growth hormone releasing hormone treatment in normal aging. J Anti-Aging Med. 2001;4(4):331-343.
Corpas E, et al. GHRH-(1-29) twice daily reverses the decreased GH and IGF-I levels in old men. J Clin Endocrinol Metab. 1992;75(2):530-535.
World Anti-Doping Agency. The 2026 Prohibited List, class S2 (S2.2.3 growth hormone; S2.2.4 GHRH and its analogues). In force Jan 1, 2026.
Prescription required. Compounded sermorelin is not FDA-approved. A licensed clinician decides if treatment is right for you. Individual results vary. Medical services provided by Wasef Health, PC.
