Headon 4IU Injection contains recombinant human growth hormone (Somatropin), a synthetic analogue of the natural hormone secreted by the pituitary gland. It regulates cell growth, repair, and metabolism. Medically, it is prescribed for growth hormone deficiency in children and adults, Turner syndrome, HIV-associated wasting, and short bowel syndrome.

In performance enhancement, Somatropin is a key peptide growth hormone used for fat loss, muscle hypertrophy, and anti-aging. It elevates IGF-1 production, enhances protein synthesis, accelerates recovery, and supports lean body composition when combined with anabolic steroids or insulin mimetics.

• PED | Peptides & Growth Hormones: Boosts lean muscle mass, fat reduction, and recovery capacity.
• Bodybuilding use: Preferred in bodybuilding, cutting cycles, and long-term wellness protocols.
• Mechanism: Mimics natural GH for sustainable physique optimization.

• IGF-1 stimulation: Increases circulating IGF-1, stimulating cellular regeneration and protein synthesis.
• Muscle effect: Enhances muscle retention while cutting and supports lean bulking with minimal fat gain.
• Recovery: Improves recovery and reduces injury downtime.
• Fat metabolism: Promotes lipolysis and reduces visceral fat stores.
• Anti-aging: Improves skin elasticity, joint support, and overall vitality.
• Sustained action: Provides effects beyond injection window due to IGF-1 activity.

• Medical Use (FDA-Approved):
  Adults: 0.2–0.3 mg/day (adjust 0.1–0.6 mg/day based on IGF-1 levels).
  Pediatrics: 0.025–0.035 mg/kg/day SC (daily or 6×/week).
  Turner Syndrome / CKD: 0.045–0.05 mg/kg/day.
  HIV Wasting: 0.1 mg/kg/day (max 6 mg/day).
  Short Bowel Syndrome: 0.1 mg/kg/day up to 4 weeks.
• Performance Use (Off-Label):
  Fat Loss: 2–4 IU/day (AM + PM), 12–24 weeks.
  Muscle Gain: 4–6 IU/day, stacked with steroids/insulin, 16–30 weeks.
  Anti-aging: 1–2 IU/day, 5 days/week.
• Administration: Subcutaneous injection, preferably abdominal fat.
• Timing: Morning or post-workout for fat loss; pre-sleep for growth.
• Rotation: Alternate injection sites to prevent lipodystrophy.
• Monitoring: IGF-1 levels, glucose, lipids, thyroid profile.

• Before reconstitution: Refrigerate at 2–8°C.
• After mixing: Use within 14–21 days under refrigeration.
• Do not freeze. Protect from light. Keep away from children.

• Common: Water retention, joint stiffness, bloating, carpal tunnel syndrome.
• Metabolic: Insulin resistance, elevated glucose (dose-related).
• Rare: Intracranial pressure (headaches), gynecomastia.
• Mitigation: Lower dose, monitor glucose, consider metformin if indicated.