I-HGH yihomoni eyenziwa ngokwemvelo ngumzimba.Idityaniswe ngokwenene kwaye ikhutshelwe ziiseli zolusu kwidlala elingaphambili lepituitary elikumazantsi obuchopho.I-HGH ivuselela iinkqubo ezininzi ze-metabolic kwiiseli.I-HGH ichaphazela iprotheni, amafutha, i-carbohydrate kunye ne-mineral metabolism.Indima enkulu ye-HGH kukukhuthaza isibindi ukuba sikhuphe i-Insulin-like Growth Factor-I (IGF-I).
