HGH (Somatropin)
Human growth hormone (somatropin, recombinant 191 amino acid hGH)
What is HGH (Somatropin)?
HGH (Somatropin): Recombinant 191-amino-acid human growth hormone (somatropin). The sources cited here most often discuss it for: Leaner body composition; Treats growth failure in children; Less visceral fat, better lipids. Evidence label: Approved (specific use).
- Type
- Peptide
- Family
- Growth Hormone Axis
- Evidence label
- Approved (specific use) (5 of 5)
- Regulatory status
- FDA-approved only for specific conditions such as childhood growth failure and adult GH deficiency; US federal law (21 U.S.C. 333(e)) makes it a crime to distribute HGH for unapproved uses, and FDA states no anti-aging, bodybuilding or athletic use has been authorized.
- Goals discussed
- Muscle & Tone, Fat Loss & Metabolism, Hormones & Fertility, Heart, Liver & Kidney
- Also called
- somatropin, somatotropin, rhGH, hGH, GH, Genotropin, Humatrope, Norditropin, Omnitrope, Nutropin
- Last reviewed
- 2026-10-11
- Recombinant 191-amino-acid human growth hormone (somatropin); acts on GH receptors to raise IGF-1; FDA-approved (since 1987) for pediatric growth failure and adult GH deficiency, not approved (and illegal to distribute) for anti-aging.12
Regulatory status FDA-approved only for specific conditions such as childhood growth failure and adult GH deficiency; US federal law (21 U.S.C. 333(e)) makes it a crime to distribute HGH for unapproved uses, and FDA states no anti-aging, bodybuilding or athletic use has been authorized. 3
The Secretary of HHS has not authorized, for example, any HGH use for anti-aging, bodybuilding, or athletic enhancement.
FDA import alert explaining the federal law that restricts HGH distribution to authorized medical uses.
What is HGH (Somatropin) researched for?
The three outcomes most discussed for HGH (Somatropin) in the sources below, as those sources report them. humanpeptides.fyi makes no claims of its own: a listed benefit can be unproven or can have failed in trials, and the label on each line says which.
Less visceral fat, better lipids
- Reduces visceral fat and improves lipids (total/LDL cholesterol) in obese adults without GHD, but no net weight lossmeta-analysis of RCTs
- Long-term (5-15 yr) replacement in GHD adults linked to sustained quality-of-life gains (mostly uncontrolled studies)
What do researchers and users say about HGH (Somatropin)?
Transgenic mice that produce supraphysiological levels of GH for their age have markedly reduced life spans and experience premature onset of age-related cognitive changes.
Commentary arguing that scientific findings fail to support GH as an anti-aging therapy; the cited finding is from animal studies.
HGH for 4 months and best sleep and recovery I have ever experienced.
Single forum self-report; other users in the same thread reported worse sleep, feeling feverish, or no effect, and product authenticity was unverified.
What side effects of HGH (Somatropin) are reported?
- Edema (50%), arthralgia (21%), carpal tunnel (19%), gynecomastia (5%), impaired glucose/diabetes in healthy elderly2
- Label warnings: tumor recurrence/neoplasm risk, intracranial hypertension, pancreatitis, hypersensitivity, lipoatrophy, death in Prader-Willi children with risk factors1
- Counterfeit/underdosed grey-market GH common concernanecdotal Reddit12
- Higher death rates in people with acute critical illness: in two ICU trials of non-deficient adults, mortality was 42% with somatropin versus 19% with placebo.FDA label1
- In children, slipped capital femoral epiphysis (hip growth plate slipping, often showing as a limp or hip or knee pain) and worsening of existing scoliosis.FDA label1
- Contraindicated in active proliferative or severe non-proliferative diabetic retinopathy, and in children whose growth plates have closed.FDA label1
- Muscle pain and abnormal skin sensations such as numbness and tingling.DEA drug fact sheet13
- Chronically high GH levels shortened lifespan and brought on early age-related cognitive changes in transgenic mice.animal11
What do peptide guides say about HGH (Somatropin)?
- Dr. Axe Dr. Axe lists approved adult uses as deficiency from pituitary disease, short bowel syndrome and HIV-related muscle wasting, and states that using or distributing HGH without medical need and a prescription is illegal. 14
- Seek Peptides Seek Peptides notes that most doctors will not prescribe HGH without a diagnosed deficiency, and presents growth hormone releasing peptides as alternatives that prompt the body to make its own GH. 15
- JAMA (Perls et al.) In adults with GH deficiency, modest body composition gains such as a 5% rise in lean mass faded for most after 24 months, and 38% dropped out citing no felt improvement. 11
- DEA The DEA reports that illicit HGH reaches users mainly through internet pharmacies, wellness and anti-aging clinics, theft, smuggling and counterfeits, and that synthetic hGH is chemically indistinguishable from natural hormone in blood and urine tests. 13
What does the research say, system by system?
Body & tissues4
- 14 days of rhGH increased patellar tendon collagen synthesis and muscle collagen in healthy young men without raising myofibrillar protein synthesishuman RCT crossover16
- Local GH injection trended to increase tendon collagen synthesis in elderly menhuman study17
- Fluid retention/edema, joint stiffness and carpal tunnel commonFDA label, meta-analysis18
- Users report firmer skin over 3-6 monthspractitioner/blog, anecdotal19
Hormones & physiology2
Brain, mood & sleep2
Weight & metabolism3
Muscle4
- Increases lean body mass ~2 kg in healthy elderly but without strength gainssystematic review2
- Lean mass gain partly water; does not raise myofibrillar protein synthesis in young men25
- Low-dose GH increased thigh muscle area in obese adults9
- No significant strength/endurance effect in 12-month GHD RCT6
How strong is the evidence for HGH (Somatropin)?
FDA-approved, strong human RCT data for GH deficiency; weak/unfavorable evidence for anti-aging or performance use in healthy adults
Approved by the FDA (or a major regulator) for at least one specific use. Approval covers that use only, not the other benefits listed. How tiers work
Questions about HGH (Somatropin)
What is HGH (Somatropin)?
Recombinant 191-amino-acid human growth hormone (somatropin).
Is HGH (Somatropin) FDA-approved?
FDA-approved only for specific conditions such as childhood growth failure and adult GH deficiency; US federal law (21 U.S.C. 333(e)) makes it a crime to distribute HGH for unapproved uses, and FDA states no anti-aging, bodybuilding or athletic use has been authorized.
What is HGH (Somatropin) researched for?
The sources cited on this page most often discuss three outcomes: Leaner body composition; Treats growth failure in children; Less visceral fat, better lipids. Each line above shows what the source reports and how strong that evidence is.
What side effects of HGH (Somatropin) are reported?
Reported in the cited sources: Edema (50%), arthralgia (21%), carpal tunnel (19%), gynecomastia (5%), impaired glucose/diabetes in healthy elderly; Label warnings: tumor recurrence/neoplasm risk, intracranial hypertension, pancreatitis, hypersensitivity, lipoatrophy, death in Prader-Willi children with risk factors; Counterfeit/underdosed grey-market GH common concern. The list is not complete, and few listed risks does not mean a compound is safe.
How strong is the evidence for HGH (Somatropin)?
Evidence label: Approved (specific use). FDA-approved, strong human RCT data for GH deficiency; weak/unfavorable evidence for anti-aging or performance use in healthy adults.
What else is HGH (Somatropin) called?
Names used for it include somatropin, somatotropin, rhGH, hGH, GH, Genotropin, Humatrope, Norditropin, Omnitrope, Nutropin.
Does humanpeptides.fyi recommend HGH (Somatropin)?
No. humanpeptides.fyi makes no claims and no recommendations of its own. It summarizes and links to what others have published and posted. Nothing here is medical advice; talk to a licensed clinician.