HGH-191AA — Recombinant Human Growth Hormone | GH Research
HGH-191AA is recombinant human somatotropin — the complete 191 amino acid, single-chain polypeptide hormone identical in sequence to endogenous pituitary GH. As the primary anabolic and metabolic hormone of the GH/IGF-1 axis, HGH-191AA is the foundational compound in growth hormone research, with decades of clinical data across GH deficiency, aging, body composition, and metabolic disease research.
Available Formats
- 11IU x10 Vials
- 18IU x10 Vials
- 26IU x10 Vials
- 43IU x10 Vials (Cloudy Batch (Still Effective and Safe))
- 42iu x10 Vials
Reconstitution: Reconstitute with Bacteriostatic Water (BAC Water) for multi-use stability, or Sterile Water for single-use protocols. Store lyophilized vials at 2–8°C.
Key Research Areas
⚡ GH/IGF-1 Axis Research — The Gold Standard
HGH-191AA is the benchmark compound for GH axis research — driving hepatic IGF-1 production, stimulating GH receptor signalling across peripheral tissues, and activating the full anabolic and metabolic programme of GH signalling. All other GH secretagogues are compared against exogenous HGH in GH research.
💪 Lean Mass & Muscle Research
Clinical research in GH deficiency and aging demonstrates HGH-191AA significantly increases lean body mass, improves nitrogen retention, and activates muscle protein synthesis. Research models document restoration of youthful body composition in GH-deficient subjects.
🔥 Lipolysis & Fat Redistribution
GH directly activates hormone-sensitive lipase and drives free fatty acid mobilization from adipose tissue — particularly visceral and subcutaneous fat stores. Research demonstrates dose-dependent fat mass reduction with HGH administration.
🦴 Bone Density Research
HGH-191AA drives osteoblast activation and IGF-1-mediated bone mineral deposition. Research in GH-deficient adults demonstrates significant improvements in bone mineral density — relevant to osteoporosis research models.
🧬 Cellular Regeneration & Anti-Aging
GH promotes collagen synthesis, organ tissue maintenance, and cellular turnover. Anti-aging research documents HGH’s role in skin thickness, exercise capacity, cardiovascular function, and cognitive performance in aging research models.
Why Choose EhBuddy?
- ✅ Verified Purity — Third-party tested for identity and potency
- ✅ Fast Canadian Shipping — Discreet packaging, shipped from Canada
- ✅ Research-Grade Quality — Strict QC manufacturing standards
- ✅ Multiple Kit Sizes — 11IU to 43IU per 10-vial kit
FOR RESEARCH USE ONLY (RUO). Not approved for human or veterinary use. Intended for in vitro and laboratory research only.














Marcus D. –
This HGH is legit. Arrived cold-packed which shows they care about integrity. Reconstituted with 1mL bac water without issue. Week 8 of research and results tracking is excellent. EhBuddy is the real deal.
Olivia C. –
Great product. Shipping to Quebec was 3 days. Packaging was completely discreet. Six months of ordering from EhBuddy — they’re consistent every time.