Bioidentical human growth hormone is injected subcutaneously (under the skin) using small needles, similarly to insulin injections. Common injection sites include the abdomen, thighs and upper arms. Treatment is customized for each patient but typically starts with daily injections then moves to 3-5 times weekly to maintain stable blood levels long-term. Dose adjustments occur over months based on clinical response, IGF-1 lab testing and possible side effects. Close provider supervision is key throughout to ensure optimal and safe results.