Human Growth Hormone (HGH): What It Does, Who It’s For, and How It’s Prescribed

Human growth hormone (HGH), also called somatotropin, is a peptide hormone made by the pituitary gland. It drives childhood growth and helps regulate adult metabolism, muscle, bone, and body composition. Prescription somatropin is FDA-approved only for specific conditions; anti-aging or performance use is not FDA-approved and carries real risks 1.

What is human growth hormone and what does it do?

Human growth hormone (HGH) is a signaling protein made by the pituitary gland, a small gland at the base of the brain. In adults, its job is less about getting taller and more about helping the body manage daily metabolism: fat use, lean mass, bone turnover, and tissue repair signals 2.

The medical name for natural HGH is somatotropin. The prescription version is somatropin, also called recombinant human growth hormone. Humatrope is one brand of somatropin; other FDA-approved somatropin products exist, but all require a prescription and clinical monitoring 1.

How the pituitary releases HGH

HGH is released in pulses, not as a steady drip. Growth hormone-releasing hormone, or GHRH, tells the pituitary to release HGH. Somatostatin does the opposite: it turns the signal down 2.

This pulse pattern matters. A single blood HGH level can be hard to interpret because the number can change quickly across the day. That is why clinicians often use insulin-like growth factor 1, or IGF-1, plus formal stimulation testing when adult growth hormone deficiency is suspected 3.

HGH, IGF-1, and metabolism

HGH tells the liver and other tissues to make IGF-1. IGF-1 is one of the main downstream signals that helps explain HGH’s effects on growth, bone, and soft tissue. Too little HGH can affect body composition and bone density; too much can lead to acromegaly, a condition linked with enlarged soft tissues, joint problems, insulin resistance, and cardiovascular risks 3.

That is the central trade-off: HGH is not simply “more is better.” The goal of medical treatment is to bring a deficient hormone system toward a safer physiologic range, not to push levels high for appearance, performance, or aging claims 3.

Who actually needs HGH treatment?

HGH treatment is used when a clinician diagnoses a condition where growth hormone replacement is medically appropriate. The FDA-approved label for Humatrope includes several pediatric growth disorders and adult growth hormone deficiency, with dosing and monitoring directed by a prescriber 1.

Pediatric growth disorders

In children, somatropin may be prescribed for specific diagnoses such as pediatric growth hormone deficiency, Turner syndrome, idiopathic short stature, small for gestational age with failure of catch-up growth, SHOX deficiency, and Prader-Willi syndrome, depending on the product label and clinical criteria 1.

Pediatric endocrine societies advise that growth hormone decisions should be made after careful evaluation of growth pattern, height velocity, family history, exam findings, labs, and, when needed, stimulation testing. Treatment is not based on height alone 4.

Adult growth hormone deficiency

Adult growth hormone deficiency, or AGHD, is different from normal aging. It is often linked to pituitary disease, pituitary surgery, radiation, brain injury, or childhood-onset growth hormone deficiency that continues into adult life 3.

Possible symptoms include higher body fat, lower lean mass, low exercise capacity, low bone density, fatigue, and reduced quality of life. These symptoms overlap with many common problems, so guidelines recommend biochemical testing rather than symptom-based diagnosis alone 3.

Can you legally get HGH in the US?

Somatropin is legal in the US when prescribed for an approved medical use by a licensed clinician. It is not a legal over-the-counter supplement, and it is not the same as “HGH pills,” “HGH sprays,” or research products sold without a prescription 1.

Prescription-only somatropin

FDA-approved somatropin products are injectable prescription drugs. The Humatrope label lists contraindications including acute critical illness after open-heart surgery, abdominal surgery, multiple accidental trauma, acute respiratory failure, active malignancy, hypersensitivity, and certain pediatric conditions such as Prader-Willi syndrome with severe obesity or severe respiratory impairment 1.

Federal law also limits distribution of human growth hormone. Under 21 U.S.C. 333(e), knowingly distributing HGH for uses not authorized by law can carry penalties, which is one reason no-prescription HGH marketing is a major red flag 5.

Why oral “HGH” pills and sprays are not real HGH

HGH is a large peptide hormone. If swallowed, it is broken down in the digestive tract, which is why FDA-approved somatropin is given by injection rather than as a pill 1. Products sold online as “HGH releasers” or “homeopathic HGH” are not the same as prescription somatropin.

This is where licensed care matters. A real prescription path includes diagnosis, lab review, side-effect monitoring, and follow-up—not a checkout page selling a hormone without medical oversight.

What are the side effects and risks of HGH?

HGH side effects in adults often come from fluid retention and tissue effects. FDA labeling for somatropin products lists possible adverse reactions such as edema, joint pain, muscle pain, carpal tunnel syndrome, numbness or tingling, increased blood sugar, and intracranial hypertension 1.

HGH can also affect glucose metabolism. The Humatrope label warns that treatment can reduce insulin sensitivity, and patients with diabetes or risk factors for diabetes may need close monitoring 1.

Risk depends on the person, the diagnosis, other medical conditions, dose exposure, and monitoring. People with active malignancy or certain acute critical illnesses should not receive somatropin according to FDA labeling 1.

Does HGH slow aging or build muscle in healthy adults?

HGH is not FDA-approved to slow aging, improve sports performance, or build muscle in healthy adults. In a landmark 1990 study, Rudman and colleagues gave biosynthetic human growth hormone to healthy men over 60 and reported changes in lean body mass and fat mass, but the trial was small, short, and not designed to prove longer life, better function, or safety for broad anti-aging use 6.

A later systematic review in healthy older adults found that growth hormone was associated with small body-composition changes but more adverse events, including soft-tissue swelling, joint pain, carpal tunnel syndrome, and impaired fasting glucose. Individual results vary, and these findings do not support HGH as a routine anti-aging drug 7.

Sports rules are also clear. The World Anti-Doping Agency lists growth hormone and its releasing factors as prohibited substances in sport, both in and out of competition 8. The International Olympic Committee has long treated HGH doping as banned performance use.

How can you support your body’s own HGH naturally?

Natural HGH pulses are influenced by sleep, exercise, nutrition, body composition, and age. These habits do not replace medical treatment for diagnosed deficiency, but they may support normal pituitary signaling and metabolic health over weeks to months 2.

• Prioritize sleep. HGH secretion is linked to slow-wave sleep, and sleep disruption can blunt normal overnight hormone patterns 9.
• Use resistance training and interval-style exercise when appropriate. Exercise can increase growth hormone pulses, though the size of the response varies by intensity, fitness level, and age 10.
• Address insulin resistance and excess visceral fat with clinician-guided lifestyle care. Obesity is linked with lower spontaneous growth hormone secretion, while weight loss can improve GH-axis dynamics in some studies 11.
• Avoid self-prescribing hormones or “HGH releaser” products. If symptoms suggest a pituitary problem, the safer next step is evaluation, not supplementation.

At Chia, when someone asks about growth-hormone-adjacent care, we start with goals, health history, medications, and safety. That is different from selling HGH as an anti-aging shortcut.

How does HGH compare with growth hormone secretagogues like sermorelin?

Sermorelin is a growth hormone-releasing hormone analog. That means it is designed to signal the pituitary to release growth hormone; it is not somatropin and does not replace HGH therapy for a person with confirmed growth hormone deficiency 12.

This distinction matters. Somatropin provides recombinant HGH from outside the body. Sermorelin works upstream, only if the pituitary can respond. Because they are different tools, they have different evidence, legal status, monitoring needs, and expectations.

Human studies of sermorelin show it can stimulate GH release in people with an intact pituitary response. For example, early clinical work with growth hormone-releasing hormone analogs showed increased GH secretion after administration, but this does not prove the same outcomes as HGH replacement in adult deficiency 12.

How does exploring sermorelin through Chia work?

At Chia, we do not present sermorelin as HGH. Compounded sermorelin is a GHRH analog, and our role is to help patients understand whether a growth-hormone-adjacent option fits their goals and health history through a 100% online clinical review.

The process starts with a short health questionnaire. A licensed US provider reviews your information and prescribes only when clinically appropriate. If prescribed, medication is compounded in the US by state-licensed 503A pharmacies and shipped to your door.

Chia currently offers sermorelin in injection, nasal spray, and tablet forms, with plans currently starting at $199/month for injections. We also offer the Foundation Longevity protocol, which combines sermorelin injection, NAD+ injection, and glutathione injection for eligible patients.

Dosing is provider-guided and adjusted over time when appropriate. Patients can message their care team through the portal between visits. That follow-up is part of the safety difference between a licensed telehealth clinic and an unlicensed research-chemical source.

What symptoms should prompt a growth hormone evaluation?

Adult growth hormone deficiency can be considered when symptoms fit and there is a medical reason to suspect pituitary disease. Examples include a history of pituitary tumor, pituitary surgery, head radiation, traumatic brain injury, or multiple pituitary hormone deficiencies 3.

Symptoms alone are not enough. Fatigue, belly fat gain, low mood, poor exercise tolerance, and low libido can come from sleep apnea, thyroid disease, menopause, low testosterone, depression, medication effects, insulin resistance, and many other causes. A clinician’s job is to sort the pattern, not jump straight to HGH.

Guidelines for adult growth hormone deficiency recommend confirming the diagnosis with appropriate testing, often including stimulation tests, because random GH levels are unreliable 3.

What should you avoid when looking for HGH online?

Online HGH is a high-risk search category because real somatropin is prescription-only. Avoid any site that sells HGH without a prescription, promises anti-aging results, markets “legal HGH” as a supplement, or skips lab review and clinician follow-up.

The safer axis is licensed versus unlicensed. A licensed provider can evaluate whether hormone testing is appropriate, explain legal options, and monitor risks. A no-prescription vendor cannot provide that medical layer.

If your goal is not diagnosed HGH deficiency but a broader longevity plan, options like sermorelin should still be handled through a licensed clinician and a state-licensed 503A pharmacy—not through research-chemical vendors.

Frequently asked questions about HGH

Keep reading

Longevity Peptides

CJC-1295 Side Effects: What Patients Should Know Before Starting

Longevity Peptides

CJC Peptide (CJC-1295): How It Works, Benefits, and Risks

Peptides

CJC Peptide (CJC-1295): What It Is, How It Works, and What the Evidence Shows