In 1964, additional contraceptive preparations containing norethisterone in combination with mestranol or EE, such as Norlestrin and Norinyl, were marketed in the United States. Society and culture
Generic names
Norethisterone is the INN and BAN of the drug while norethindrone is its USAN. Brand names
Norethisterone (NET), including as NETA and NETE, has been marketed under many brand names throughout the world. Availability
United States
Norethisterone was previously available alone in 5 mg tablets under the brand names Norlutin in the United States, but this formulation has since been discontinued in this country. However, NETA remains available alone in 5 mg tablets under the brand name Aygestin in the United States. It is one of the only non-contraceptive progestogen-only drug formulations that remains available in the United States. The others include progesterone, medroxyprogesterone acetate, megestrol acetate, and hydroxyprogesterone caproate, as well as the atypical agent danazol.Both norethisterone and NETA are also available in the United States as contraceptives. Norethisterone is available both alone (brand names Camila, Errin, Heather, Micronor, Nor-QD, others) and in combination with EE (Norinyl, Ortho-Novum, others) or mestranol (Norinyl, Ortho-Novum, others), while NETA is available only in combination with EE (Norlestrin, others). NETE is not available in the United States in any form. Research
Norethisterone, as NETA and NETE, has been studied for use as a potential male hormonal contraceptive in combination with testosterone in men.Long-acting norethisterone microspheres for intramuscular injection have been studied for potential use in birth control. References
Further reading
External links
"Norethindrone". Drug Information Portal. U.S. National Library of Medicine.
Autosomal recessive bestrophinopathy is a rare genetic disorder characterized by central vision loss, retinopathy, absence of an electrooculogram light rise, and decreased electroretinogram. Other findings include dispersed punctate flecks, macular neurosensory retina fluid build-up, hyperopia, macular thinning, and (less commonly) angle-closure glaucoma.It is caused by hereditary autosomal recessive mutations in the BEST1 gene, located in chromosome 11, and it has been described in less than 20 individuals from 10 families worldwide. == References ==