Somatropin HGH is a lyophilized injectable containing somatropin (recombinant human growth hormone) manufactured by Stealth Labs, supplied as 10 or 36 IU per vial in a 1 kit (10 x 2 mL vials).
Somatropin HGH contains somatropin, a 191-amino-acid recombinant human growth hormone produced by recombinant DNA technology. Somatropin binds to dimeric growth hormone receptors on target tissues, activating JAK2-STAT signaling and stimulating the liver and other tissues to secrete insulin-like growth factor-1 (IGF-1) . This cascade promotes chondrocyte differentiation and proliferation, protein synthesis, lipolysis, and hepatic glucose output .
In clinical practice, somatropin is FDA-approved for specific pediatric and adult indications. Pediatric uses include growth failure due to inadequate endogenous growth hormone secretion, short stature associated with Turner syndrome, idiopathic short stature (ISS), SHOX deficiency, and short stature born small for gestational age with no catch-up growth by age 2–4 . Adult uses are limited to replacement of endogenous growth hormone in adults with growth hormone deficiency confirmed by provocative testing . Somatropin is not approved for athletic performance enhancement, anti-aging, or body composition modification in healthy adults.
Non-medical use of somatropin for physique enhancement or anti-aging purposes falls outside approved indications. Clinical reviews note that while growth hormone influences body composition, the long-term safety and efficacy of these therapies for healthy aging remain uncertain, and associated adverse effects exist . Common adverse reactions include injection site reactions, headaches, edema, arthralgia, myalgia, carpal tunnel syndrome, and impaired glucose tolerance . This research chemical product is not FDA-regulated for purity, sterility, or actual content.
Somatropin HGH is supplied as a sterile lyophilized powder in 2 mL glass vials. Reconstitution with an appropriate diluent is required before use in research applications.
Somatropin is a recombinant human growth hormone approved for specific growth-related and deficiency conditions, with a well-characterized mechanism involving IGF-1 mediation.
Somatropin is a single-chain 191-amino-acid polypeptide that binds to dimeric growth hormone receptors (GHR) on target cell membranes. This interaction triggers intracellular signal transduction via JAK2-STAT pathways, leading to transcription and translation of GH-dependent proteins including IGF-1, IGFBP-3, and acid-labile subunit . Somatropin exerts direct tissue and metabolic effects as well as indirect effects mediated primarily by IGF-1, including stimulation of chondrocyte differentiation and proliferation, hepatic glucose output, protein synthesis, and lipolysis .
The pharmacokinetics of subcutaneous somatropin demonstrate a mean Cmax of approximately 38 ng/mL after 4.5 hours, with absolute bioavailability around 70%. The subcutaneous elimination half-life is approximately 2.3 hours, longer than the intravenous half-life of 0.42 hours due to slow absorption from the injection site .
Nearly 80% of circulating IGF-1 is of hepatic origin, and IGF-1 circulates bound primarily to IGFBP-3 and the acid-labile subunit . The growth-promoting effects of somatropin on skeletal tissue are mediated through both direct GHR activation and IGF-1 release .
Somatropin is FDA-approved under multiple brand names including Humatrope, Genotropin, Omnitrope, Norditropin, and Zomacton for specific pediatric and adult indications . It is not approved for athletic performance enhancement, anti-aging, or body composition modification in healthy adults. This research chemical product is not FDA-regulated.
Stealth Labs offers HCG 5000 as a glycoprotein hormone that stimulates endogenous testosterone production, and T3 as a thyroid hormone. Unlike these compounds, somatropin is a pituitary hormone that directly stimulates IGF-1 production and has broad metabolic effects including protein synthesis, lipolysis, and glucose regulation.
Compared to BPC 157, which is a research peptide studied for tissue healing, somatropin is a full-length recombinant hormone with a well-characterized receptor mechanism and extensive clinical trial data. Both are sold as research chemicals by Stealth Labs and are not FDA-regulated for non-medical use.
Published laboratory reports for Somatropin HGH are shown below with the test date, measured concentration and percentage of the product's label claim.
View Report
Laboratory results apply to the specific tested sample represented in each published report and should not be interpreted as a measurement of every vial or production batch.
The information below is provided for educational reference only. Somatropin is a prescription medication; medical use requires appropriate diagnosis, clinical supervision and ongoing monitoring. This research chemical product is not for human use, and non-medical use falls outside approved indications.
FDA-approved dosing for somatropin is highly individualized and varies by indication. For pediatric growth hormone deficiency, the recommended dose is generally 0.16 to 0.24 mg/kg body weight per week divided into 6–7 daily subcutaneous injections . For Turner syndrome, 0.33 mg/kg/week is recommended; for idiopathic short stature, up to 0.47 mg/kg/week; for small for gestational age, up to 0.48 mg/kg/week . For adult growth hormone deficiency, a non-weight-based starting dose of approximately 0.2 mg/day (range 0.15–0.3 mg/day) is recommended, with individualized titration based on IGF-1 levels and clinical response . Common reference ranges for somatropin in non-medical bodybuilding contexts are not well characterized in publicly available bodybuilding resources.
| Use Case | Reference Range | Frequency |
|---|---|---|
| Pediatric GHD (medical) | 0.16–0.24 mg/kg/week | 6–7 daily injections |
| Adult GHD (medical) | ~0.2 mg/day starting | Daily subcutaneous |
| Turner syndrome (medical) | 0.33 mg/kg/week | 6–7 daily injections |
Somatropin is supplied as a lyophilized powder requiring reconstitution with an appropriate diluent. For products containing benzyl alcohol preservative, the diluent should not be used in newborns due to the risk of serious adverse reactions . For lactating women, preservative-free normal saline is recommended instead of benzyl alcohol-containing diluent . Reconstitution should be performed gently by swirling rather than shaking to prevent denaturation or aggregation.
After reconstitution, somatropin solutions should be stored refrigerated at 2–8°C, protected from light, and used within the timeframe specified by the manufacturer. Do not freeze reconstituted solution. Inspect the solution before use and do not use if it appears cloudy or contains particulate matter.
Common adverse reactions reported in adult and pediatric patients include upper respiratory infection, fever, pharyngitis, headache, otitis media, edema, arthralgia, paresthesia, myalgia, carpal tunnel syndrome, peripheral edema, flu syndrome, hypothyroidism, hyperglycemia, and impaired glucose tolerance . Somatropin may decrease insulin sensitivity, particularly at higher doses .
Serious adverse effects include intracranial hypertension, hypersensitivity reactions, fluid retention, hypoadrenalism, hypothyroidism, slipped capital femoral epiphysis in pediatric patients, progression of preexisting scoliosis, pancreatitis, and lipohypertrophy/lipoatrophy at injection sites . A boxed warning exists for increased mortality in patients with acute critical illness . Because this research chemical product is not FDA-regulated, its purity, sterility, and actual content are unverified beyond the single laboratory report shown.
Somatropin is a peptide hormone and does not suppress endogenous testosterone production. No post-cycle therapy is applicable or necessary for somatropin alone. If somatropin is referenced alongside anabolic compounds in non-medical contexts, any PCT protocol would be determined by the other compounds, not by somatropin.
Dosing strategies and support protocols should be adjusted based on medical supervision and bloodwork where possible. The information above is for educational reference and does not constitute medical advice. This research chemical is not for human use.
Somatropin is an FDA-approved prescription medication with a known safety profile from clinical trials. This research chemical product is not FDA-regulated and is not for human use.
Somatropin carries a boxed warning for increased mortality in patients with acute critical illness due to complications following open heart or abdominal surgery, multiple accidental trauma, or acute respiratory failure . Somatropin is contraindicated in patients with active neoplasia, diabetic retinopathy, and closed epiphyses in pediatric patients .
Serious hypersensitivity reactions may occur. In the event of an allergic reaction, prompt medical attention should be sought . Intracranial hypertension has been reported, usually within 8 weeks of initiation; fundoscopic examinations should be performed before and periodically during treatment .
This product is sold as a research chemical and is not approved for human use. Products sold online under the name somatropin through research compound vendors are not FDA-regulated, have no verified manufacturing standards, and carry unknown contamination, dosing, and safety risks. Somatropin is legally available only by prescription.
Common adverse reactions in adult and pediatric patients include upper respiratory infection, fever, pharyngitis, headache, otitis media, edema, arthralgia, paresthesia, myalgia, carpal tunnel syndrome, peripheral edema, flu syndrome, hypothyroidism, hyperglycemia, and impaired glucose tolerance . Injection site discomfort, reactions, and lipoatrophy have been reported .
Somatropin may decrease insulin sensitivity, particularly at higher doses . Fluid retention may occur in adults and may be dose-dependent . Hypoadrenalism and hypothyroidism may be unmasked or worsened during treatment, requiring monitoring and possible glucocorticoid or thyroid hormone adjustments . Slipped capital femoral epiphysis and progression of preexisting scoliosis may occur in pediatric patients . Pancreatitis has been reported; consider pancreatitis in patients with abdominal pain .
Leukemia has been reported in a small number of growth hormone-deficient patients treated with growth hormone, though it is uncertain whether this increased risk is related to the pathology of growth hormone deficiency itself, growth hormone therapy, or other associated treatments such as radiation therapy .
Somatropin should not be used in patients with acute critical illness due to increased mortality risk . It is contraindicated in patients with active neoplasia, diabetic retinopathy, and in pediatric patients with closed epiphyses . Patients with Prader-Willi syndrome who are severely obese or have a history of upper airway obstruction or sleep apnea are at risk of sudden death after initiating somatropin therapy .
Medically supervised somatropin therapy involves regular monitoring of growth response in pediatric patients, IGF-1 levels in adults, thyroid function, glucose tolerance, and for signs of intracranial hypertension. Fundoscopic examinations should be performed before and periodically during treatment . Testing for antibodies to growth hormone should be carried out in any patient who fails to respond to therapy .
Laboratory testing of the product itself, such as the published potency report shown in the Lab Reports tab, is separate from clinical monitoring of the person using the medication. Product testing does not assess individual health status or suitability for use.
Lyophilized somatropin should be stored refrigerated at 2–8°C, protected from light. Allow the vial to warm to room temperature before opening to prevent condensation. Do not freeze.
Reconstituted somatropin should be stored refrigerated at 2–8°C and used within the timeframe specified by the manufacturer. Do not freeze reconstituted solution. Keep all medications and research peptides out of the reach of children.
Somatropin HGH is supplied through the official Stealth Labs distribution chain and shipped in original manufacturer packaging with discreet, privacy-focused handling.
The outer shipping package remains discreet, with privacy-focused handling and no unnecessary external product details. Products are supplied through the official Stealth Labs distribution chain.
To verify your Somatropin HGH product, use the security code on the vial label and cross-check it on the Stealth Labs official site. Official Stealth Labs presentation, batch-linked lab proof, and original packaging help reinforce product legitimacy and buyer confidence.
For complete delivery details, tracking policy, and reshipment terms, please see our Shipping Info page.
Proper storage conditions help preserve hormone stability and overall product integrity throughout shelf life.
Lyophilized somatropin powder should be stored refrigerated at 2–8°C, protected from light and moisture. Allow the vial to warm to room temperature before opening to prevent condensation. Do not freeze.
After reconstitution, somatropin solutions should be stored refrigerated at 2–8°C and used within the timeframe specified by the manufacturer. Do not freeze reconstituted solution. Inspect the solution before use and do not use if it appears cloudy, discolored, or contains particulate matter.
Keep out of reach of children. Follow proper handling and sterile injection practices when administering the product.
Answers to common questions about Somatropin HGH, its approved indications, clinical data, and laboratory testing.
Somatropin HGH contains somatropin, which is FDA-approved for specific pediatric and adult indications. Pediatric uses include growth failure due to inadequate endogenous growth hormone secretion, short stature associated with Turner syndrome, idiopathic short stature, SHOX deficiency, and short stature born small for gestational age . Adult use is limited to replacement of endogenous growth hormone in adults with confirmed growth hormone deficiency . It is not approved for athletic performance enhancement, anti-aging, or body composition modification.
In clinical practice, somatropin is administered by subcutaneous injection. Pediatric doses are typically divided into 6 or 7 daily injections per week . Adult doses are usually given once daily . Dosing is highly individualized based on indication, growth response, and IGF-1 levels. No dosing recommendation can be made for this research chemical product, as it is not FDA-approved for human use.
Somatropin is a peptide hormone and does not suppress endogenous testosterone production. No post-cycle therapy is applicable or necessary for somatropin alone. If somatropin is referenced alongside anabolic compounds in non-medical contexts, any PCT protocol would be determined by the other compounds, not by somatropin.
Somatropin binds to dimeric growth hormone receptors on target tissues, activating JAK2-STAT signaling and stimulating the liver and other tissues to secrete IGF-1 . This cascade promotes chondrocyte differentiation and proliferation, protein synthesis, lipolysis, and hepatic glucose output . Nearly 80% of circulating IGF-1 is of hepatic origin .
After subcutaneous administration, somatropin reaches peak concentrations in approximately 4.5 hours, with a subcutaneous half-life of approximately 2.3 hours . The clinical effects on growth and body composition accumulate over weeks to months of consistent use. In pediatric growth hormone deficiency, growth response is typically assessed over 6–12 month intervals. The time required to notice effects depends on the individual and the specific outcome being evaluated.
There is no single growth hormone product that is universally best. Somatropin is available under multiple FDA-approved brand names including Humatrope, Genotropin, Omnitrope, Norditropin, and Zomacton, with similar efficacy and safety profiles . A newer long-acting formulation, somatrogon (injected weekly), has shown comparable efficacy and safety to daily somatropin in clinical trials . Individual response varies, and product selection is determined by clinical factors.
Somatropin is recombinant human growth hormone requiring daily subcutaneous injections. Somatrogon is a long-acting growth hormone that only needs to be injected once a week. A worldwide clinical study in children with growth hormone deficiency found that weekly somatrogon was as effective and as safe as daily somatropin injections over 12 months .
Somatropin is human growth hormone, which stimulates IGF-1 production and has broad metabolic effects on growth, protein synthesis, and lipolysis . HCG 5000 is human chorionic gonadotropin, a glycoprotein hormone that mimics luteinizing hormone and stimulates testosterone production from Leydig cells. These are fundamentally different hormones with distinct mechanisms and indications.
36 IU is the total vial content, not a single dose. The appropriate dose depends on the medical indication and is determined by a physician based on body weight and clinical response. It is important to distinguish a vial content from a dose; the 36 IU label indicates the total hormone content per vial. For a 70 kg adult, a typical pediatric GHD dose of 0.16–0.24 mg/kg/week would be approximately 11–17 mg/week, which exceeds the content of a single 36 IU (12 mg) vial.
Somatropin HGH is available at 10 or 36 IU per vial. It is supplied as a lyophilized powder in a 1 kit containing 10 x 2 mL vials, giving 100 IU or 360 IU total per kit.
Yes. A published laboratory report dated October 1, 2024 measured Somatropin HGH at 12.02 mg (36.06 IU), equivalent to 100.17% of its 36 IU label claim. The complete report can be viewed in the Lab Reports tab. Laboratory results apply to the tested sample represented by the individual report.
Somatropin is not FDA-approved for anti-aging purposes. A clinical review notes that while growth hormone influences body composition, the long-term safety and efficacy of growth hormone therapies for promoting healthy aging remain uncertain, and associated adverse effects exist . Non-medical use of somatropin for anti-aging falls outside approved indications and is not supported by robust clinical evidence.
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