Several drug that mimic growth hormone. The drugs are given by daily injections. They have potential side effects and must be prescribed by medical doctors. Several anti-aging clinics are located in the United States. Treatment costs vary.
Natural precursors are safer and more effective than synthetic injections.
Your own hormones do not create adverse side effects. The precursor supplements are comprised of natural amino acids and are available in tablet, capsule and liquid form. Basic ingredients should include natural Gammahydroxymethylbutyrate, Arginine, Camitine, glutamine, lysine, Ornithine, and Thiaroine. More effective formulas include Glycine, Mucuna Pmiens, selenium, Phenylaline and niacin, and other amino acids. Vegetarian formulas are also available.