HGH (Somatropin): the complete guide
Human growth hormone (somatropin) is a recombinant version of endogenous GH. It is FDA approved for several deficiency and growth disorders and is widely studied for recovery, body composition, and anti-aging effects.
How HGH (Somatropin) works
HGH binds growth hormone receptors in the liver and peripheral tissues, triggering IGF-1 production and direct anabolic, lipolytic, and metabolic effects.
Typical HGH (Somatropin) dosage
Commonly reported research ranges: 1–4 IU daily (approx 0.33–1.33 mg; 1 mg ≈ 3 IU).
Dose should always be individualized. Factors that influence it include bodyweight, research goal, tolerance, and specific compound batch. The information below is educational, not a prescription.
How to reconstitute HGH (Somatropin)
A widely used reconstitution for a 6 mg vial is 2 ml of bacteriostatic water. With a typical 1000 mcg dose this works out to the unit count shown in the calculator below.
Half-life and administration frequency
Approximately 2–4 hours (recombinant, subcutaneous).
This half-life informs how often HGH (Somatropin) is typically dosed. Shorter half-lives usually mean more frequent dosing to maintain plasma levels; longer half-lives allow daily, weekly, or less-frequent administration depending on the compound.
Reported side effects
- Water retention
- Joint aches
- Carpal tunnel symptoms
- Insulin resistance / elevated fasting glucose
- Edema
This list reflects effects reported in available literature or user logs. It is not exhaustive. Adverse reactions should be discussed with a qualified clinician.
Common HGH (Somatropin) stacks
- Sometimes combined with GH secretagogues; dosing overlap requires care
Storage and handling
Lyophilized refrigerated. Reconstituted: refrigerated 2–8 °C, use within 14–28 days depending on brand.
FDA and regulatory status
FDA approved for GH deficiency, Turner syndrome, HIV wasting, and certain growth disorders (various brand names).
HGH (Somatropin) clinical trials and evidence
For clinical-trial and primary-literature context, start with the sources below. We prioritize official drug labels, ClinicalTrials.gov records, and PubMed-indexed literature when available.
- Growth hormone clinical trial registry — ClinicalTrials.gov
Track your HGH (Somatropin) protocol on iPhone
Peptide Protocol logs every dose, calculates reconstitution for you, and keeps your full protocol on one calm screen.
See the app →Frequently asked questions
What is HGH (Somatropin)?
Human growth hormone (somatropin) is a recombinant version of endogenous GH. It is FDA approved for several deficiency and growth disorders and is widely studied for recovery, body composition, and anti-aging effects.
How does HGH (Somatropin) work?
HGH binds growth hormone receptors in the liver and peripheral tissues, triggering IGF-1 production and direct anabolic, lipolytic, and metabolic effects.
What is a typical HGH (Somatropin) dose?
Commonly reported ranges are 1–4 IU daily (approx 0.33–1.33 mg; 1 mg ≈ 3 IU). This is research information, not a recommendation — dosing should be individualized under clinical guidance.
What is the half-life of HGH (Somatropin)?
Approximately 2–4 hours (recombinant, subcutaneous). This influences how often it is administered.
How do you reconstitute HGH (Somatropin)?
A common approach is to add 2 ml of bacteriostatic water to a 6 mg vial. Use the reconstitution calculator for exact unit counts.
What are the side effects of HGH (Somatropin)?
Water retention; Joint aches; Carpal tunnel symptoms; Insulin resistance / elevated fasting glucose; Edema.
Is HGH (Somatropin) FDA approved?
FDA approved for GH deficiency, Turner syndrome, HIV wasting, and certain growth disorders (various brand names).
Are there clinical trials for HGH (Somatropin)?
Registered or published clinical-trial sources for HGH (Somatropin) are listed in the references section below. Evidence depth varies widely by compound, so check the cited trial registries and primary literature before relying on any claim.
References
- Somatropin (recombinant human growth hormone) — FDA Drugs@FDA — U.S. Food and Drug Administration. Multiple approved somatropin products (Genotropin, Humatrope, Norditropin, etc.)
- Growth hormone literature (PubMed) — National Library of Medicine. Primary literature on rhGH pharmacology, indications, and safety
- Growth hormone clinical trial registry — ClinicalTrials.gov. Registered trials spanning pediatric, adult-deficiency, and off-label indications
Sources listed above were used to verify the claims on this page. See our editorial policy for how we source information.
Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.