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Norethisterone acetate (NETA), also known as norethindrone acetate and sold under the brand name Primolut-Nor among others, is a progestin medication which is used in birth control pills, menopausal hormone therapy, and for the treatment of gynecological disorders.
Norethisterone acetate, norethisterone enanthate, etynodiol, etynodiol diacetate, lynestrenol, noretynodrel, quingestanol, and quingestanol acetate are all prodrugs of norethisterone. Ethinylestradiol is an estrogenic metabolite of norethisterone formed by cytochrome P450 enzymes.
Relugolix acts as an GnRH antagonist, or an antagonist of the gonadotropin-releasing hormone receptor. [13] Estradiol is an estrogen, or an agonist of the estrogen receptors, whereas norethisterone acetate is a progestin (synthetic progestogen), or an agonist of the progesterone receptors. [14]
These include the 19-nortestosterone derivatives norethisterone, noretynodrel, and tibolone, as well as the norethisterone prodrugs [251] norethisterone acetate, norethisterone enanthate, lynestrenol, and etynodiol diacetate. [1] The estrogenic activity of norethisterone and its prodrugs are due to metabolism into ethinylestradiol. [1]
Norethindrone acetate and ethinyl estradiol have been approved in the US for the prevention of pregnancy as a swallowable tablet since 1968. [4] In 2022, the combination of ethinylestradiol with norethisterone or with norethisterone acetate was the 80th most commonly prescribed medication in the United States, with more than 8 million ...
Norethisterone acetate, a widely used progestogen ester and prodrug of norethisterone. Medroxyprogesterone acetate, a progestogen ester that does not act as a prodrug. This is a list of progestogen esters, or esters of progestogens. [1] [2] [3] [4]
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