Assertion: contraceptive's progesterone | /r/Synonym | norethindrone
Facets:
Source sentences:
text: It contains two active ingredients: a synthetic estrogen called ethinyl estradiol and a synthetic progesterone called norethindrone.
text: Nortrel is a birth control pill that contains two compounds similar to female hormones -- a synthetic estrogen called ethinyl estradiol and a synthetic progesterone called norethindrone.