药物信息为WATSON PHARMARevised: June 2006IN-5260/SPHYSICIAN LABELING Brevicon (Norethindrone and Ethinyl Estradiol Tablets USP, 0.5 mg/0.035 mg) Norinyl 1+35 (Norethindrone and Ethinyl Estradiol Tablets USP, 1 mg/0.035 mg) Norinyl 1+50 (Norethindrone and Mestranol Tablets USP, 1 mg/0.05 mg) Rx Only (Watson Pharma, Inc.): DESCRIPTION

Brevicon^® Tablets provide a continuous oral contraceptive regimen consisting of 21 blue tablets containing norethindrone 0.5 mg and ethinyl estradiol 0.035 mg and 7 orange tablets containing inert ingredients.

Norinyl^®1+35 Tablets provide a continuous oral contraceptive regimen consisting of 21 yellow-green tablets containing norethindrone 1 mg and ethinyl estradiol 0.035 mg and 7 orange tablets containing inert ingredients.

Norinyl^®1+50 Tablets provide a continuous oral contraceptive regimen consisting of 21 white tablets containing norethindrone 1 mg and mestranol 0.05 mg and 7 orange tablets containing inert ingredients.

Norethindrone is a potent progestational agent with the chemical name 17-Hydroxy-19-Nor-17α-pregn-4-en-20-yn-3-one. Ethinyl estradiol is an estrogen with the chemical name 19-nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17-diol. Mestranol is an estrogen with the chemical name 3-Methoxy-19-nor-17α-pregna-1,3,5(10)-trien-20-yn-17-ol. Their structural formulae follow:

The blue BREVICON tablets contain the following inactive ingredients: FD&C Blue No. 1, lactose, magnesium stearate, povidone, and starch.

The yellow-green NORINYL 1+35 tablets contain the following inactive ingredients: D&C Green No. 5, D&C Yellow No. 10, lactose, magnesium stearate, povidone, and starch.

The white NORINYL 1+50 tablets contain the following inactive ingredients: lactose, magnesium stearate, povidone, and starch.

The inactive orange tablets in the 28-day regimens of BREVICON, NORINYL 1+35 and NORINYL 1+50 contain the following ingredients: FD&C Yellow No. 6, lactose, microcrystalline cellulose, and magnesium stearate.