药物信息为FEMCON Fe (norethindrone and ethinyl estradiol tablets,chewable and ferrous fumarate tablets) 0.4 mg / 35 mcg (Warner Chilcott (US), LLC): DESCRIPTION

FEMCON^® Fe provides a regimen for oral contraception derived from 21 white tablets composed of norethindrone and ethinyl estradiol followed by 7 brown ferrous fumarate (placebo) tablets. The chemical name for norethindrone is 17-hydroxy-19-nor-17a-pregn-4-en-20-yn-3-one and for ethinyl estradiol the chemical name is 19-nor-17a-pregna-1,3,5(10)-trien-20-yne-3,17-diol. The structural formulas are:

NORETHINDRONE

ETHINYL ESTRADIOL

The active white FEMCON Fe tablets contain 0.4 mg norethindrone and 0.035 mg ethinyl estradiol, and the following inactive ingredients: dibasic calcium phosphate, lactose, magnesium stearate, maltodextrin, povidone, sodium starch glycolate, spearmint flavor and sucralose.

The brown tablets contain ferrous fumarate, microcrystalline cellulose, magnesium stereate, povidone, sodium starch glycolate, and compressible sugar. The ferrous fumarate tablets do not serve any therapeutic purpose.