HGH (Somatropin)
Also known as: Somatropin, Human Growth Hormone, rhGH, Growth Hormone
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HGH (Somatropin) from $114/kit
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Key Facts: HGH (Somatropin)
- Category
- Growth Hormone
- FDA Status
- FDA Approved
- Clinical Status
- FDA Approved for specific indications - growth hormone deficiency, Turner syndrome, Prader-Willi, HIV-associated wasting and others. Use for anti-aging, physique or athletic performance is off-label, is banned by every major sporting body, and distribution for those purposes is illegal in most countries.
- Administration
- Subcutaneous injection, usually daily, commonly in the evening to mimic natural nocturnal release
- Typical Dose
- 0.15-0.3 mg daily (clinical) or 2-4 IU daily (community)
- Frequency
- Once daily, typically evening
- Duration
- Clinical use is ongoing and monitored. Community cycles are typically reported as 3-6 months.
Mechanism of Action
HGH binds the growth hormone receptor, mostly in the liver, which triggers IGF-1 release. IGF-1 does much of the work people associate with growth hormone: it drives cell growth, protein synthesis and cartilage growth. HGH itself acts directly on fat tissue, encouraging lipolysis, and it opposes insulin, which is why higher doses push blood sugar up and can create insulin resistance over time. The direct-versus-IGF-1 split matters practically: effects on fat come quickly and are largely direct, while effects on muscle and connective tissue are slower and IGF-1 mediated. This is also why HGH and IGF-1 LR3 are not interchangeable despite being linked.
Research Summary
For diagnosed growth hormone deficiency the evidence is solid and decades deep: recombinant HGH restores body composition, bone density and quality of life in adults with genuine deficiency, and it is approved for that. For everyone else the picture is far weaker. The famous Rudman study in the New England Journal of Medicine in 1990 gave HGH to 12 older men for six months and reported gains in lean mass and reductions in fat, and that single small trial launched an entire anti-aging industry. It had no functional strength or performance endpoints, it was not designed to assess safety, and Rudman maintained until his death in 1994 that it carried no anti-aging implications. NEJM published an editorial in 2003 criticizing the industry that had grown up around citing it. Subsequent reviews of HGH in healthy older adults have found modest body composition changes alongside frequent side effects, with no demonstrated benefit to strength, function or longevity. Long-term supraphysiologic use carries real risks including insulin resistance and, at sustained high doses, acromegaly-like changes.
Dosing Information
Typical Dosingⓘ
Community experience
0.15-0.3 mg daily (clinical) or 2-4 IU daily (community)
0.15-1.33 mg daily depending entirely on purpose
Once daily, typically evening
Clinical dosing for deficiency is titrated against blood IGF-1 levels, not chosen from a range. Community physique doses are several times higher than replacement doses and carry correspondingly higher risk of insulin resistance and joint problems.
Research Dosingⓘ
Scientific studies
Clinical doses for deficiency differ enormously from community physique doses. Both shown; they are not the same protocol.
Doses from Studies
0.15-0.3 mg daily
Somatropin adult GHD labeling - Titrated against serum IGF-1 ↗
2-4 IU daily
Community-reported protocols - Physique use. No clinical basis for this range.
Duration
Clinical use is ongoing and monitored. Community cycles are typically reported as 3-6 months.
Administration
Subcutaneous injection, usually daily, commonly in the evening to mimic natural nocturnal release
Timing & Administration
Best Time to Take
Evening, before bed
Once daily in most protocols
Food Recommendation
Take on empty stomach
Why This Timing?
Natural growth hormone release peaks during early deep sleep, so evening dosing is the common approach to approximate that rhythm.
Possible Side Effects
Not everyone experiences these effects. Individual responses vary based on dosage, duration, and personal factors.
- ●Fluid retention and swelling, especially in hands and feet
- ●Joint pain and stiffness
- ●Carpal tunnel syndrome
- ●Insulin resistance and raised blood glucose
- ●Increased risk of type 2 diabetes with sustained high doses
- ●Acromegaly-like changes (jaw, hands, feet, organ growth) with long-term supraphysiologic use
- ●May accelerate growth of existing tumors
References
- https://pubmed.ncbi.nlm.nih.gov/2355952/
- https://www.nejm.org/doi/full/10.1056/NEJMp020186
- https://pubmed.ncbi.nlm.nih.gov/?term=growth+hormone+healthy+elderly+systematic+review
Research This Peptide Further
Buy in shop
HGH (Somatropin) from $114/kit
2 verified vendors, ≥99% purity, COAs included.
Frequently Asked Questions
What does HGH (Somatropin) do?
Human growth hormone is the real thing rather than a secretagogue: a 191-amino-acid protein identical to what your pituitary makes, produced recombinantly since the 1980s. It is a properly approved medicine for growth hormone deficiency, and it is also the most misused compound in this entire space. Almost everything you read about HGH for anti-aging or physique traces back to a single small 1990 study whose own author later disowned how it was used.
How does HGH (Somatropin) work?
HGH binds the growth hormone receptor, mostly in the liver, which triggers IGF-1 release. IGF-1 does much of the work people associate with growth hormone: it drives cell growth, protein synthesis and cartilage growth. HGH itself acts directly on fat tissue, encouraging lipolysis, and it opposes insulin, which is why higher doses push blood sugar up and can create insulin resistance over time. The direct-versus-IGF-1 split matters practically: effects on fat come quickly and are largely direct, while effects on muscle and connective tissue are slower and IGF-1 mediated. This is also why HGH and IGF-1 LR3 are not interchangeable despite being linked.
Is HGH (Somatropin) FDA approved?
Yes, HGH (Somatropin) is FDA approved. FDA Approved for specific indications - growth hormone deficiency, Turner syndrome, Prader-Willi, HIV-associated wasting and others. Use for anti-aging, physique or athletic performance is off-label, is banned by every major sporting body, and distribution for those purposes is illegal in most countries.
What are the side effects of HGH (Somatropin)?
Reported side effects include: Fluid retention and swelling, especially in hands and feet, Joint pain and stiffness, Carpal tunnel syndrome, Insulin resistance and raised blood glucose, Increased risk of type 2 diabetes with sustained high doses. Individual responses vary based on dosage, duration, and personal health factors.
What is the typical dose of HGH (Somatropin)?
Community-reported common dose: 0.15-0.3 mg daily (clinical) or 2-4 IU daily (community) (Once daily, typically evening). Range: 0.15-1.33 mg daily depending entirely on purpose. Administration: Subcutaneous injection, usually daily, commonly in the evening to mimic natural nocturnal release. Community-reported doses. Not medical advice. Consult healthcare provider.
Related Peptides
Peptides commonly compared with HGH (Somatropin) or used in similar applications.
MK-677
Clinical TrialsMK-677 (ibutamoren) is not actually a peptide, it is a small, orally active non-peptide molecule that mimics ghrelin, your hunger and growth-hormone hormone. Taken as a daily pill, it reliably pushes up growth hormone and IGF-1 levels, which is why it is popular for muscle and recovery. It has been through real human trials but was never approved as a drug, and the trials that mattered most for older adults and Alzheimer's came up short.
Growth HormoneGHRP-6
Clinical TrialsGHRP-6 is a synthetic six-amino-acid peptide (His-D-Trp-Ala-Trp-D-Phe-Lys-NH2) that tricks the body into releasing its own growth hormone. It was one of the first growth hormone secretagogues ever made, and the hunt to find out why it worked led scientists straight to the discovery of ghrelin. It has no approval as a drug anywhere and is used only as a research compound.
Growth HormoneGHRP-2
Clinical TrialsGHRP-2 (generic name pralmorelin) is a synthetic hexapeptide growth hormone secretagogue and a second-generation cousin of GHRP-6. It prompts the pituitary to release growth hormone and is the one peptide in this family with an actual regulatory approval: it is licensed in Japan as a diagnostic agent for growth hormone deficiency. Outside that narrow diagnostic use it has no approval and is sold elsewhere only as a research compound.
Growth HormoneTesamorelin
FDATesamorelin is a stabilized analog of growth-hormone-releasing hormone (GHRH 1-44) with a chemical modification that protects it from rapid breakdown. It is FDA-approved (brand name Egrifta) to reduce excess visceral abdominal fat in people with HIV-associated lipodystrophy, which makes it one of the few growth-hormone-axis peptides with a real approval behind it. Its evidence base is solid for that specific population and thinner for the general anti-aging and fat-loss uses it gets promoted for online.
Growth HormoneIpamorelin
Clinical TrialsIpamorelin is a synthetic pentapeptide growth hormone secretagogue developed by Novo Nordisk and derived from GHRP-1. It is researched mainly for stimulating the body's own growth hormone (GH) release, and was studied in humans primarily for postoperative ileus and gut motility rather than anti-aging. It is not an approved drug anywhere: it reached Phase II trials, was discontinued for insufficient efficacy, and is now sold only as a research chemical.
Growth HormoneCJC-1295 (No DAC)
Clinical TrialsCJC-1295 is a synthetic analog of growth hormone-releasing hormone (GHRH), specifically a modified GHRH(1-29), engineered for a long duration of action. The form most people mean by CJC-1295 includes a Drug Affinity Complex (DAC) that binds blood albumin to extend its half-life to roughly 6 to 8 days, raising GH and IGF-I for days from a single injection. It was developed by ConjuChem, reached Phase II trials and was abandoned; it is not an approved drug and is sold only as a research chemical. A version without DAC (Modified GRF 1-29) acts for only about 30 minutes.
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