Sermorelin is a lab-made fragment of a hormone your body already produces. It is the first 29 amino acids of growth hormone-releasing hormone (GHRH), the signal your hypothalamus sends to the pituitary gland to say “release some growth hormone now.” The pituitary reads sermorelin as that signal and answers it the same way [1].
That single fact is the most important thing to understand before anything else on this page: sermorelin does not contain growth hormone. It does not supply GH the way an injection of human growth hormone (somatropin) does. It asks your own pituitary to release its own GH, and whether that request gets answered depends on whether the gland still has GH to give. This page covers the whole drug in one place: what it does, what it is used for, what the trials found, what it costs, and where each topic is covered in depth.
| Drug class | Growth hormone-releasing hormone (GHRH) analog; a 29-amino-acid peptide, sold as sermorelin acetate |
|---|---|
| How it works | Binds the GHRH receptor on the pituitary, which releases a pulse of the body’s own growth hormone; IGF-1 rises downstream |
| FDA status | No approved product on the US market. The brand Geref was approved in 1990 and 1997 and both are listed as discontinued, not for safety or effectiveness reasons. What sells today is compounded |
| Controlled substance? | No. It is not on the DEA’s controlled-substances list, and it is not a steroid |
| Formats sold | Injection (171 sellers), oral tablet or troche (48), nasal spray (8), across 178 sellers with a verified format |
| Typical price | Injection $99 to $449 a month (median $179, 105 sellers); oral $95 to $299. Prices read October 2026 |
| Dose with trial data | 10 micrograms per kilogram, injected under the skin nightly (one adult trial) |
| Evidence base | One placebo-controlled adult outcome trial (19 adults aged 55 to 71, 16 weeks of active drug), plus pediatric growth trials from the 1990s |
| Banned in sport? | Yes. The World Anti-Doping Agency prohibits it at all times |
How does sermorelin work?
Here is the chain of events, in order:
- You inject sermorelin under the skin, usually at night, because the body’s own GH release is pulsatile and peaks during sleep.
- It travels to the pituitary and binds the GHRH receptor on cells called somatotrophs.
- Those cells release a pulse of your own growth hormone. In the controlled adult trial, the pulse began within about 10 minutes of the injection and lasted roughly two hours [1].
- That pulse tells the liver to make more IGF-1 (insulin-like growth factor 1), the downstream signal behind most of what people call “GH effects.” In the same trial, IGF-1 began rising within two weeks of nightly dosing [1].
The strongest scientific point in sermorelin’s favor is that it keeps the body’s own rhythm instead of overriding it. A year-long study in children given continuous low-dose GHRH(1-29) found repeated GH release with no sign of the pituitary wearing out; its response to a fresh dose “remained constant during the treatment” [2]. Why the injection is timed to bedtime, and what changes if it isn’t, is covered in why sermorelin is dosed at night.
Does sermorelin need a working pituitary?
Yes, and it is the limitation nobody markets. Because sermorelin stimulates the pituitary rather than replacing GH, it only works if the gland can still respond. Prior radiation, a tumor, surgery or a condition affecting the gland directly can leave sermorelin with nothing to stimulate. Age matters for the same reason: somatotroph responsiveness and GH output both decline over time, so the “ask” sermorelin can extract from an older pituitary is smaller than what a younger gland produces. Who was actually studied, by age, is laid out in the age range behind the trials.
What is sermorelin used for?
Its only approved use was pediatric. Under the brand Geref, sermorelin acetate was approved to help diagnose and treat growth hormone deficiency in children, and GHRH(1-29) analogs were studied for months to a year as a way to speed growth in short, slowly growing children [2] [6]. Neither Geref product is sold today. The sermorelin sold now is compounded by a pharmacy from bulk sermorelin acetate powder and prescribed mostly to adults, framed around body composition, sleep, recovery and aging. None of those adult goals is an approved indication, which is why the regulatory history matters as much as the pharmacology. The full record of what was approved, when, and why it ended is in is sermorelin FDA-approved?
What are the benefits of sermorelin?
The benefits with trial data behind them come from one study. In 19 adults aged 55 to 71, sixteen weeks of nightly sermorelin raised GH and IGF-1, thickened the skin in both sexes, and increased lean body mass, well-being, libido and insulin sensitivity in the men only [1]. Sleep quality did not change in either sex. Fat loss, energy, recovery and anti-aging claims beyond that list have not been measured in a controlled adult trial. That does not mean they never happen; it means no published study shows them. The benefit-by-benefit breakdown, with the sex of the people each one was seen in, is on sermorelin benefits (and, for men specifically, sermorelin for men), and the trial-by-trial verdict on whether it works at all is in does sermorelin work?
What are the side effects of sermorelin?
In the published trials, few and mild. The adult trial reported a single adverse finding, a transient rise in blood lipids that resolved before the study ended [1], and its companion immune study reported none [5]. In a six-month pediatric trial of 60 children, three treated patients reported mild irritation where they injected, and 39 of 40 developed antibodies to GHRH that mostly cleared within nine months of stopping [4]. The honest caveat is duration: no study has followed adult users for years, so long-term safety, including cancer risk, is unmeasured rather than proven. What the cancer research does and does not show is covered in sermorelin side effects, and what the reports filed with FDA can and cannot tell you is in sermorelin adverse event reports.
What dose of sermorelin is used?
The only adult dose with outcome data is 10 micrograms per kilogram of body weight, injected under the skin once a night [1]. At 70 kg that is about 700 micrograms. Most sellers advertise a flat 200 to 300 micrograms a night instead, a range that no controlled trial has tested, so the commercial dose is a compounding convention rather than a research finding. How many milliliters or insulin-syringe units a dose comes to depends entirely on how your vial was mixed. The conversion chart, with the math shown, is in the sermorelin dosage chart, and the dose-by-weight tool works out the trial dose at your own weight.
How long does sermorelin take to work?
On paper, fast; in outcomes, months. The GH pulse arrives within minutes of the first injection, IGF-1 rose by week 2 in the adult trial, and GH secretion was clearly up by week 4 [1]. The changes people actually notice or measure, such as lean mass and well-being, were checked only at the 16-week endpoint, and only moved in the men. A marketing timeline that promises energy in week two or a visible change by week eight is not drawing on any trial visit. The visit-by-visit table is in the sermorelin results timeline.
Sermorelin vs HGH: what is the difference?
Sermorelin is a request and HGH is a delivery. HGH (somatropin) is recombinant growth hormone itself, injected straight into the body past the pituitary’s own controls. The two also sit in very different evidence and legal tiers:
| Sermorelin | HGH (somatropin) | |
|---|---|---|
| What you inject | A signal that asks the pituitary for GH | Growth hormone itself, made by recombinant DNA |
| Needs a working pituitary | Yes, it has nothing to act on otherwise | No, it bypasses the gland |
| FDA-approved product today | None; compounded only | Several, including Genotropin, Humatrope and Norditropin |
| Head-to-head result | Slower growth than GH in children | Faster growth on the same trial |
| Off-label distribution | Not covered by an HGH-specific statute | A federal felony outside approved uses |
In the only trial that tested both directly, 60 children with GH deficiency grew faster on real GH than on either dose of the GHRH analog, and doubling the analog’s dose added nothing [4]. Six somatropin products hold current FDA approvals [8], and distributing HGH for any unapproved use is a crime under a statute written for it [9]. The full comparison, row by row, is in sermorelin vs. HGH.
Is sermorelin FDA-approved or legal?
It is not FDA-approved today, and it is generally legal with a prescription. Both Geref approvals sit in FDA’s records as discontinued, with FDA’s note that they were not withdrawn for safety or effectiveness reasons [6]. That note is what lets a pharmacy still compound it. Sermorelin is not a controlled substance [3]. It also does not appear on FDA’s list of bulk substances that may present significant safety risks, as of the FDA page updated April 22, 2026, a list that does include another growth hormone secretagogue, ibutamoren (MK-677) [7]. The legal path is a licensed prescriber plus a licensed pharmacy; research-grade powder bought without a prescription is a different product. Where the rules stand this year is in sermorelin legal status in 2026, how the other GH peptides compare in the guide to growth hormone peptides; the prescribed-versus-research distinction is laid out in prescribed vs. research sermorelin, and its standing in tested sport in sermorelin and drug testing.
What should you not mix with sermorelin?
No interaction study of compounded sermorelin has settled this, so the useful guide is the closest approved relative. Tesamorelin works the same way, and its FDA label says people on glucocorticoid replacement may need a higher steroid dose after starting it, that drugs cleared by liver CYP450 enzymes should be monitored, and that glucose intolerance can develop [10]. That last point matters for anyone also on insulin or a GLP-1. PubMed returns no record pairing sermorelin with semaglutide or tirzepatide at all [11]. Whether alcohol matters is unstudied too, as the half-life and small-questions page explains. Bring a full medication list to the prescriber. The interactions that matter, drug by drug, are in what not to mix with sermorelin, and sermorelin and weight loss covers the GLP-1 overlap.
Who should not take sermorelin?
Sermorelin has no label of its own, so there is no official contraindications list. The tesamorelin label is the nearest reference, and it rules out people whose hypothalamic-pituitary axis has been disrupted by surgery, radiation, a tumor or head trauma, anyone with an active cancer, anyone allergic to the drug, and pregnant women [10]. The cancer line follows from the mechanism: GH and IGF-1 promote cell growth in general, which is the last thing a prescriber wants to amplify near an active tumor. Pregnancy has no sermorelin safety data at all. Each line, with the reasoning and the gaps, is in who should not take sermorelin, and the labs a careful prescriber checks first are in sermorelin bloodwork.
How much does sermorelin cost?
Injectable sermorelin runs $99 to $449 a month across the 105 sellers that publish a monthly price, with the median at $179. Oral tablets and troches run $95 to $299 across 29 sellers, and nasal spray $169 to $199. Those figures come from each seller’s own page, read October 2026. The sticker price rarely settles a comparison on its own, though: a few sellers add a required membership, some bill every 28 days rather than monthly, and a headline figure is sometimes a discounted first month. The format you pick changes the bill at some sellers and not at others. The dated price table and every catch behind it are in sermorelin cost, and the cost calculator totals a year at any seller.
Which forms does sermorelin come in?
Injection is the format the trials used and the one most sellers carry. Oral tablets and sublingual troches are sold by a smaller group, and a handful sell a nasal spray. Only the injection has controlled human outcome data behind it; no published trial has tested an oral or nasal sermorelin product for an adult outcome. Oral is not automatically cheaper, either, since at least one seller charges more for its tablet than for its vial. The format question is covered in sermorelin tablets and oral vs. injection pricing, and sellers are compared by format on the injections board, the oral board and the nasal spray board.
Is sermorelin acetate different from sermorelin?
No. Acetate is the salt the peptide is packaged with so the powder stays stable on a shelf, and a vial labeled “sermorelin acetate” holds the same active molecule as one labeled “sermorelin.” The label difference is a naming habit, not a second product or a stronger generation. What does vary from vial to vial is the milligram figure printed beside the name, because one pharmacy may count the salt in that weight and another may not, and a seller rarely says which. That is worth asking about when two vials look identical on paper. The naming and the milligram question are covered in sermorelin acetate.
How do you get a sermorelin prescription?
Through a licensed prescriber, most often an online telehealth service. The usual path is an intake form about your health history and goals, sometimes a lab panel such as IGF-1, a short consult, and then a prescription sent to a compounding pharmacy that ships the vials or tablets to you. A service that approves everyone instantly, with no questions about cancer history, pituitary problems or pregnancy, is skipping the screening that the closest approved relative’s label would expect. The steps, start to finish, are in how to get a sermorelin prescription; what the intake asks is in what a sermorelin intake asks you, the questions worth putting to the prescriber are in questions to ask a sermorelin prescriber, and prescriber-led services are compared on the telehealth board.
Is sermorelin a steroid?
No. Steroids, whether anabolic like testosterone or anti-inflammatory like prednisone, are built on a four-ring cholesterol backbone. Sermorelin is a chain of 29 amino acids, chemically closer to a small protein than to a steroid hormone. It does not bind androgen receptors and does not carry the virilizing side effects tied to anabolic steroids. The law treats it differently as well: anabolic steroids are scheduled controlled substances, and sermorelin is not on the federal list [3]. The mix-up comes from sermorelin being discussed in the same online spaces as performance drugs. The details, including what “PED” means for it, are in is sermorelin a steroid?
The bottom line
Sermorelin is a GHRH analog that gets your own pituitary to release your own growth hormone. That it raises GH and IGF-1 is well documented [1] [2]. That those rises turn into the outcomes people are chasing rests on one small trial, and mostly in men. It is not a steroid, it is not FDA-approved today, and it is legal through a prescriber and a licensed pharmacy. Everything after that is a question about a specific seller: what dose the price buys, what else is billed, and who prescribes it. Sellers are compared side by side on the sermorelin online board.