Triptorelin is a synthetic decapeptide gonadotropin-releasing hormone (GnRH) agonist that works by acting continuously on pituitary GnRH receptors, initially stimulating and ultimately inhibiting the secretion of gonadotropins (LH, FSH), thereby reducing sex hormone (testosterone, estrogen) levels. Clinically, it is commonly used in acetate or papoate form, with sustained-release formulations (such as 1, 3, or 6-month injections) to achieve continuous action.