Ethinylestradiol/norethisterone acetate

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Ethinylestradiol /
norethisterone acetate
Combination of
Norethisterone acetateProgestogen
Clinical data
Trade namesEstrostep, Loestrin, Microgestin, others[1]
  • US: X (Contraindicated)
Routes of
By mouth (pill)
Legal status
Legal status
CAS Number
PubChem CID

Ethinylestradiol/norethisterone acetate, also known as ethinyl estradiol/norethindrone acetate, is a combination of ethinylestradiol and norethisterone acetate which is used as birth control.[1] Ethinylestradiol is an estrogen while norethisterone acetate is a progestin.[1] It is taken by mouth.[1]

In 2016 it was the 55th most prescribed medication in the United States with more than 14 million prescriptions.[2]

Brand names[edit]

Brand names include Anovlar, Blisovi, Cumorit, Estrostep, FemHRT, Fyavolv, Gildess, Junel, Larin, Leribane, Loestrin, Mibelas, Microgestin, Minastrin, Norlestrin, Primodos, Taytulla, Tri-Legest

In addition, the combination is marketed in the United States under the brand name FemHRT for use in hormone replacement therapy for menopausal symptoms.[3]

See also[edit]


  1. ^ a b c d "Estrogen-Progestin Combinations Monograph for Professionals". AHFS. Retrieved 28 December 2018.
  2. ^ "The Top 300 of 2019". Retrieved 22 December 2018.
  3. ^ "Drug Approval Package: Femhrt (Norethindrone Acetate & Ethinyl Estradiol) NDA# 21-065". Retrieved 28 December 2018.