Are the estrogens and progestins that are in birth control pills the same as those in Prempro? Do they have the same risks?
January 15, 2005 09:17

Birth control pills also contain estrogens and progestins but different kinds and different doses. All estrogens have similar side effects. However, the risks of particular side effects may differ since birth control pills are used by younger women with a different health status compared to postmenopausal women.