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Norethisterone acetate or norethindrone acetate is a progestin used in contraception. It is the acetate ester of norethisterone.
norethindrone acetate (nôreth´indrōn´ as´ tāt), n brand names: Aygestin, Micronor, Norlutate, Norlutin, Nor-QD; drug class: progesterone derivative;