Weight
HGH
Growth
0
Amino acids
Molecular weight
Peptide
Type
HGH (Human Growth Hormone), also known as somatotropin, is a 191-amino-acid peptide hormone produced by somatotropic cells of the anterior pituitary gland. It drives anabolic processes by binding to the GH receptor and stimulating IGF-1 production, promoting muscle growth, fat oxidation, and tissue repair. FDA-approved recombinant HGH (somatropin) is used clinically for GH deficiency, HIV-associated wasting, and short bowel syndrome, while it is also widely used off-label in anti-aging and performance contexts.
Top researched benefits
Overview of HGH
HGH binds to homodimeric growth hormone receptors (GHR) on target cells, activating JAK2 kinase and phosphorylating STAT5 transcription factors, which drive IGF-1 gene expression in the liver and peripheral tissues. Directly, HGH promotes lipolysis and protein synthesis; indirectly, IGF-1 mediates muscle hypertrophy, bone growth, and anabolic signaling.
growth hormone deficiency
- FDA-approved for idiopathic and organic causes, Turner syndrome, Prader-Willi syndrome, SGA, Noonan syndrome, SHOX deficiency.
- FDA-approved for childhood-onset or adult-onset causes (pituitary tumors, surgery, radiation, trauma).
- FDA-approved to increase lean body mass and body weight in cachexia.
body composition
- Significant fat loss especially abdominal/visceral fat over 1-3 months.
- Increased muscle mass and improved body composition.
- Enhanced exercise recovery and tissue healing.
antiaging
- Improved skin elasticity, texture, and hair/nail growth.
- Improved energy, sleep, and quality of life.
Typical Dose
0.2–0.3mg (approximately 0.6–1 IU) per injection
Frequency
once daily subcutaneous injection
Cycle Duration
ongoing or 3–6 month cycles with medical supervision
Storage
Lyophilized powder: 2–8°C, protect from light, do not freeze. Reconstituted: 2–8°C for up to 28 days; do not shake.
No visual available
Due to this peptide having no amino acids, there is no molecular chain to display.
Chemical Makeup
Key benefits
Increases lean muscle mass by stimulating protein synthesis and IGF-1-mediated muscle hypertrophy
Reduces visceral and subcutaneous body fat through direct stimulation of lipolysis and fatty acid oxidation
Accelerates recovery from injury and exercise by upregulating collagen synthesis and tissue repair pathways
Improves bone mineral density by stimulating osteoblast activity via IGF-1 signaling
Community interest
This peptide is still gaining traction in the community.
Pituitary Hormone | Growth, Recovery & Metabolic Health
This overview is informational and based on aggregated descriptions from studies and user reports.
Was it helpful?YesNoHGH Molecular Information
View the scientifc details of HGH.
Molecular Weight
22129DaChain Length
0Amino AcidsType
PeptideHGH Protocols
Subcutaneous injection is the standard and most effective route for HGH administration, providing reliable systemic absorption and predictable IGF-1 elevation. Common injection sites include the abdomen (at least 2 inches from the navel), outer thighs, and posterior upper arms, with site rotation required to prevent lipodystrophy.
| Goal | Dosage | Frequency | Route |
|---|---|---|---|
| Fat Loss | 3 | 1 day range | SubQ |
| GH Deficiency Replacement | 1.5 | 1 day range | SubQ |
| Anti-Aging / General Wellness | 2 | 1 day range | SubQ |
| Muscle Growth / Body Recomposition | 4 | 1 day range | SubQ |
| Advanced Bodybuilding / Performance | 5 | 1 day range | SubQ |
| Injury Recovery / Tissue Healing | 2 | 1 day range | SubQ |
Reconstitution Instructions
Materials needed:
Steps to reconstitute
- Allow the lyophilized HGH vial and bacteriostatic water (BAC water) to reach room temperature before reconstituting.
- Wipe the rubber stopper of both the HGH vial and the BAC water vial with a fresh alcohol swab and allow to air dry.
- Draw the desired volume of BAC water into an insulin syringe — typically 1 mL per 10 IU vial for a 1:1 mL ratio, or up to 3 mL per vial for easier dosing calculations.
- Tilt the HGH vial at a 45-degree angle and slowly inject the BAC water down the inner wall of the vial — never shoot it directly onto the powder.
- Gently swirl the vial between your palms in slow circular motions until the powder is fully dissolved into a clear solution. Do not shake or agitate.
- Store the reconstituted vial in the refrigerator. Do not freeze. Use within 3 weeks when reconstituted with BAC water, or within 5 days if sterile water was used.
- Before each injection, wipe the vial stopper and the intended injection site with a fresh alcohol swab and allow to dry.
- Draw the calculated dose into a fresh insulin syringe, insert at a 45-degree angle into a subcutaneous site, and depress the plunger slowly.
- Rotate injection sites with each administration to prevent tissue atrophy at any single site.
HGH Cycle
The HGH Cycle section explains how long a typical cycle lasts and what to expect during each phase. Over time, your body can become less responsive with continuous use.
Taking breaks between cycles may help maintain effectiveness and support better overall results.
- Week 1-2
- Improved sleep quality, increased energy, possible water retention and joint stiffness
- Week 2-4
- Enhanced exercise recovery, skin improvement, possible carpal tunnel symptoms
- Month 1-2
- Noticeable fat loss (especially abdominal), improved skin elasticity and texture
- Month 2-3
- Continued fat loss, lean mass improvements, hair/nail growth, reduced recovery time
- Month 3-6
- Significant body composition changes, improved bone density, sustained energy/well-being
- Week 0-0
- Maintained benefits; effects diminish weeks-months after discontinuation
Dosing tools
HGH Peptide Dosage Calculator
Calculate peptide doses with our visual syringe guide.
mg
Enter the total amount of peptide in the vial in milligrams (as stated on the label).
The dose you want to inject per administration, in mcg or mg.
1,000 mcg = 1 mg
1 mL
2 mL
3 mL
5 mL
Custom
Volume of bacteriostatic water you add to reconstitute the powder. Use BAC water for preservation.
Injection Results
Based on your vial and dilution inputs.
HGH
SINGLE COMPOUNDVolume per injection
0.05
mL
Concentration
10.00
mg/mL
Doses per vial
20
doses
Total injections per vial
20 injections
How it works
Based on a 10 mg HGH vial diluted with 1 mL of bacteriostatic water, each 500 mcg injection equals 0.05 mL.
1mL / 100 units
5 units
0.050 mL
Reference Guide
Dosing Cycle
- Peptide
- HGH
- Dosing
- 0.2–0.3mg (approximately 0.6–1 IU) per injection
- Dosing Frequency
- once daily subcutaneous injection
- Cycle Duration
- ongoing or 3–6 month cycles with medical supervision
- Storage
- Lyophilized powder: 2–8°C, protect from light, do not freeze. Reconstituted: 2–8°C for up to 28 days; do not shake.
Note: Triple agonist; microdose for fewer side effects
Reconstitution Tips
- Use bacteriostatic water (BAC) — contains 0.9% benzyl alcohol for preservation
- Inject water slowly — aim down the vial wall, not directly onto powder
- Never shake — gently swirl or roll the vial until dissolved
- Store properly — refrigerate at 2-8°C after reconstitution
- Use within 28 days — most reconstituted peptides remain stable for about 4 weeks
- Keep sterile — always clean vial tops with alcohol before drawing
Peptide Interactions
Research suggestions of HGH interactions with other common peptides and substances.
Side effects
Contraindications
Active cancer (may accelerate tumor growth)
Acute critical illness (increased mortality in ICU patients)
Closed epiphyses in children (for growth promotion)
Pregnancy/breastfeeding
Stop signs
Severe or worsening carpal tunnel symptoms
Signs of diabetes (increased thirst, frequent urination, blurred vision)
Severe edema (facial, hand, or feet swelling)
Severe joint/muscle pain unresponsive to dose reduction
New lumps, masses, or rapidly growing moles
Severe headaches or vision changes
Signs of allergic reaction
Gynecomastia (breast tissue growth in males)
Hypothyroid symptoms (fatigue, weight gain, cold intolerance)
Bad signs
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Frequently asked questions
What is a peptide dosage calculator?
A peptide dosage calculator is a free tool that converts your vial size, bacteriostatic water volume, and target dose into an exact syringe draw volume. Instead of doing the reconstitution math by hand, you enter three inputs and instantly get the concentration of your solution and how many milliliters or syringeunits to draw. This calculator works for single peptide compounds and multi-peptide blends.
How do I calculate peptide dosage from a vial?
To calculate your peptide dose, divide the total peptide content of your vial in micrograms by the volume of bacteriostatic water you added in milliliters. This gives you your solution concentration in mcg/mL. Then divide your target dose by that concentration to get your draw volume. For example, a 5mg (5,000 mcg) vial reconstituted with 2mL of BAC water gives a concentration of 2,500 mcg/mL. A 250 mcg dose would require drawing 0.1mL. This calculator automates all of those steps instantly.
How much Bacteriostatic water should I add to a peptide vial?
Most people add 2mL to 3mL of bacteriostatic water per vial, but the right amount depends on the dose you want to draw and the syringe size you are using. Adding 1mL to a 5mg vial gives you a concentration of 5,000 mcg/mL, making each dose very small in volume. Adding 2mL gives you 2,500 mcg/mL, which is easier to measure on a standard insulin syringe. A general guideline is to choose a volume that puts your typical dose somewhere between 10 and 30 units on a U-100 syringe. Use the calculator above to test different water volumes and find what works for your dose.
How are peptides different from proteins?
Both are made of amino acids, but peptides are much smaller than proteins. Because of their tiny size, peptides can act like tiny messengers in the body, sending specific signals to your cells to tell them exactly what to do.
HGHResearch References
HGH is a fda approved compound
HGH
HGH is a fda approved compound
KIMS Long-Term Safety Study
15,809 patients, mean 5.3 years follow-up. Largest long-term safety study showing de novo cancer incidence comparable to general population (SIR 0.92).
2020
Long-term Efficacy and Safety in Adult GHD
Systematic review demonstrating improvements in body composition, muscle strength, quality of life, bone mass/density, and lipoprotein patterns.
2018
Effects on Morbidity - Systematic Review
Demonstrated positive effects on cardiovascular surrogate markers and bone metabolism.
2016
GH-Thyroid Hormone Interaction Study
GH replacement unmasks central hypothyroidism in 36-47% of apparently euthyroid patients.
2015
Calculate peptide dosages
Learning how to calculate a peptide dose? Use our beginner-friendly peptide dosage, blend, and accumulation calculators. Enter vial size, reconstitution volume, and target dose to get exact draw volumes instantly. No guesswork, just clear guidance that helps prevent common mistakes.
