What it is for
- **Linear growth in GH-deficient children** (approved).
- **Linear growth in selected non-GHD pediatric short-stature syndromes** (approved, brand-specific).
- **Body-composition repair in adults with documented GHD** (approved replacement).
- **Lean mass, weight, and endurance in HIV-associated wasting** (approved; Serostim).
- **Nutrient absorption support in adult short-bowel syndrome** (approved; Zorbtive).
- **Lean-mass gain and fat-mass loss in healthy adults** (off-label / illegal-distribution claim).
- **Rise in circulating IGF-1** (pharmacodynamic surrogate, often sold as if it were a benefit).
- **Athletic performance** — strength, aerobic capacity, sprint / anaerobic capacity (doping claim; WADA-prohibited).
- **Anti-aging / restored youth** — skin, vitality, bone, lifespan (off-label claim; not approved; US distribution for this use is illegal).
- **Improved insulin sensitivity or metabolic health** (sometimes claimed; physiology predicts the opposite).