from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 19-nor-17α-ethynyltestosterone, a progestogen used in some combined oral contraceptives.
Sorry, no etymologies found.
(Chemically, norethindrone is 17a-ethinyl-19-nortestosterone; its generic name in Europe is norethisterone).
The drug in question, norethisterone, is an oral contraceptive that can also be prescribed for various conditions related to menstrual cycles.
Since it creates a confusion in all 19-norandrosterone positive results in the case of female athletes who might be on norethisterone medication, WADA has prescribed follow-up tests to determine the source of 19-NA.
Slide 50: Best type: Avoid OCs containing norethisterone or levonorgestrel less androgenic, high estrogen Diane (cyproterone acetate), Gynera (gestodene),
To start with, he suggests pills with levonorgesterol or norethisterone and a low dose of estrogen.
They found pills with norethisterone to be lower risk, too.