Hormonal agents (1)
Sex hormones (1)
Pregnenedione · Progesterone, (13 alpha,17 alpha)-(+-)-Isomer · Progesterone, (9 beta,10 alpha)-Isomer
Progesterone (P4) is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. It belongs to a group of steroid hormones called the progestogens, and is the major progestogen in the body. Progesterone has a variety of important functions in the body.