The Chemistry of the Pill
نویسنده
چکیده
Norethindrone was the first progestin, a synthetic version of a natural steroid hormone, progesterone. A few birth control pills contain only a progestin, while the rest combine a progestin and an estrogen analogue. In the more than 60 years since Djerassi’s landmark synthesis, drug makers have experimented with different formulations of oral contraceptives, including introducing new types of progestins and varying levels of estrogen. Their goal has been to maintain the Pill’s effectiveness, while reducing undesirable side effects.
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