Assertion: birth control's progesterone | /r/HasProperty | progestin
Facets:
Source sentences:
text: Most pills contain man-made versions of the female hormones estrogen (ethinyl estradiol) and progesterone (progestin).
text: Oral contraceptives used to contain high amounts of the hormone estrogen, but now many birth control pills contain a very low dose mix of a synthetic form of estrogen and a synthetic form of progesterone known as progestin.