HGH-100IU delivers pharmaceutical-grade recombinant human growth hormone (somatropin) in a high-potency 100IU / 33.3mg / 3ml pre-filled research pen – the definitive research tool for investigating the full spectrum of GH receptor signaling, IGF-1 axis activation, anabolic physiology, and long-term metabolic, regenerative, and anti-aging-related pathways.

Somatropin is identical in amino acid sequence (191 aa) and structure to endogenous pituitary-derived human growth hormone. It binds the GH receptor (GHR), triggering JAK2/STAT5 signaling, increased IGF-1 production in liver and local tissues, and widespread downstream effects on protein synthesis, lipolysis, glucose metabolism, and tissue growth/repair.

Major research domains include:

• Potent stimulation of systemic IGF-1 production and sustained elevation of circulating IGF-1 levels
• Promotion of lean body mass accrual, enhanced protein synthesis, and nitrogen retention
• Accelerated lipolysis, reduced visceral and subcutaneous adipose tissue, and improved body composition
• Investigation of bone mineral density, collagen synthesis, cartilage repair, and connective tissue remodeling
• Studies on muscle hypertrophy, satellite cell activation, and recovery from injury or catabolic stress
• Exploration of metabolic effects: insulin sensitivity modulation, glucose homeostasis, and energy expenditure
• Anti-aging, neuroprotective, cognitive function, skin elasticity, and wound healing research models
• Synergistic interactions with IGF-1 analogs, secretagogues (GHRP/Ipamorelin/CJC), or thyroid hormones

The 100IU (33.3mg) strength in a 3ml pen provides substantial capacity for extended-duration protocols, higher cumulative dosing studies, or experiments requiring sustained GH exposure, with somatropin’s established half-life of ~2–3 hours (but prolonged downstream IGF-1 effects) supporting daily or every-other-day administration designs.

Product highlights:

• Ultra-high purity recombinant somatropin (>99% – third-party HPLC, MS & bioactivity verified)
• Sterile, ready-to-use pre-filled pen injector – precise IU/mg dosing and supreme laboratory convenience
• Stabilized formulation for reliable activity and extended shelf-life under proper refrigeration