Estradiol/norethisterone

Estradiol/norethisterone, tentative brand name Netagen or Netagen 403, was a combination of estradiol, an estrogen, and norethisterone, a progestin, which was studied as a birth control pill to prevent pregnancy in women. It was taken by mouth and contained 4 mg micronized E2 and 3 mg NET per tablet. The medication was developed by Novo Pharmaceuticals in Denmark and was never marketed.
Two related formulations were Netagen 423 and Netasyn, were also studied but never marketed.