among the progestogens available to the prescriber and recommended to be added to ert , the molecules derived from testosterone [ norethisterone ( norethindrone ) , norgestrel ] are less prescribed than the molecules derived from progesterone ( didrogesterone ) or from 17-hydroxyprogesterone ( medroxyprogesterone acetate ) .
C0033308
progesterone
C0020387
17-hydroxyprogesterone