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n. A steroid hormone, C21H30O2, secreted by the corpus luteum of the ovary and by the placenta, that acts to prepare the uterus for implantation of the fertilized ovum, to maintain pregnancy, and to promote development of the mammary glands.

n. A drug prepared from natural or synthetic progesterone, used in the prevention of miscarriage, in the treatment of menstrual disorders, and as a constituent of some oral contraceptives.

n. A steroid hormone, secreted by the ovaries, whose function is to prepare the uterus for the implantation of a fertilized ovum and to maintain pregnancy.

n. A synthetic version of the compound, used in contraceptive pills and other pharmaceutical products.

n. a steroid hormone (trade name Lipo-Lutin) produced in the ovary; prepares and maintains the uterus for pregnancy

"I'm not sure why the risk for endometrial cancer are mentioned in the editorial - it did not appear in the WHI results, and should not be an issue if progesterone is taken according to recommended HRT protocols."

progestogen    progestin   

estrogen    estriol    estradiol    testosterone    melatonin