<unk>  contraceptive<unk>  (ECPs)—sometimes simply referred to as<unk>  contraceptives (ECs) or the morning-after<unk> —are drugs that act both to prevent ovulation or fertilization and possibly post-fertilization implantation of a blastocyst (embryo).<unk>  contraceptive<unk>  (sometimes referred to as<unk>  hormonal contraception (EHC) in the U.K.) may contain higher doses of the same hormones (estrogens, progestins, or both) found in regular combined oral contraceptive<unk> . Taken after unprotected sexual intercourse, such higher doses may prevent pregnancy from occurring. Mifepristone is another kind of ECP, but is considered an anti-hormonal drug, and does not contain estrogen or progestins. The phrase "morning-after<unk>  is figurative; ECPs are licensed for use up to 72 hours after sexual intercourse. ECPs are distinct from medical abortionmethods that act after implantation.
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Combined oral contraceptive pill
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