Recombinant human growth hormone — the gold standard for elevating GH and IGF-1.
Typical dose range: 1–4 IU (anti-aging) up to 4–8 IU (performance)
Frequency: Daily
Route: Subcutaneous
Half-life: ~3 h
Evidence level: Strong (clinical)
Effective but expensive and requires bloodwork. Fasting glucose and HbA1c should be monitored at any meaningful dose.