Ethinyl Estradiol may decrease the anticoagulant activities of Acenocoumarol. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Lumacaftor. The serum concentration of anecortave acetate can be increased when it is combined with Ethinyl Estradiol. The therapeutic efficacy of Desogestrel can be decreased when used in combination with Carbamazepine. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Cobicistat. The serum concentration of Triamcinolone can be increased when it is combined with Ethinyl Estradiol. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Gabexate. The serum concentration of Desogestrel can be decreased when it is combined with Colesevelam. Ethinyl Estradiol may decrease the anticoagulant activities of Ferulic acid. The therapeutic efficacy of Miglustat can be decreased when used in combination with Desogestrel. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Bexarotene. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Phosphoramidon. The metabolism of Ethinyl Estradiol can be decreased when combined with Dronedarone. The serum concentration of Desogestrel can be decreased when it is combined with Rifapentine. The therapeutic efficacy of Edoxaban can be decreased when used in combination with Desogestrel. The serum concentration of Desogestrel can be decreased when it is combined with Lumacaftor. The serum concentration of Desogestrel can be decreased when it is combined with Telaprevir. The therapeutic efficacy of Abciximab can be decreased when used in combination with Desogestrel. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Fosamprenavir. The serum concentration of Equilenin can be increased when it is combined with Ethinyl Estradiol. The therapeutic efficacy of Fondaparinux can be decreased when used in combination with Desogestrel. Ethinyl Estradiol may decrease the anticoagulant activities of Phenindione. Ethinyl Estradiol may increase the thrombogenic activities of Lenalidomide. The therapeutic efficacy of Saxagliptin can be decreased when used in combination with Desogestrel. The therapeutic efficacy of Mitiglinide can be decreased when used in combination with Ethinyl Estradiol. The therapeutic efficacy of Glimepiride can be decreased when used in combination with Ethinyl Estradiol. The therapeutic efficacy of Desogestrel can be decreased when used in combination with Phenytoin. The serum concentration of Desogestrel can be decreased when it is combined with Clobazam. The therapeutic efficacy of Desogestrel can be decreased when used in combination with Barbexaclone. The therapeutic efficacy of Troglitazone can be decreased when used in combination with Desogestrel. The therapeutic efficacy of Heparin can be decreased when used in combination with Desogestrel. The serum concentration of Dyphylline can be increased when it is combined with Ethinyl Estradiol. Ethinyl Estradiol may decrease the anticoagulant activities of Troxerutin. The serum concentration of Desogestrel can be decreased when it is combined with Rifaximin. Ethinyl Estradiol may decrease the anticoagulant activities of Dextran. The serum concentration of Desogestrel can be decreased when it is combined with Oxcarbazepine. The serum concentration of Theophylline can be increased when it is combined with Ethinyl Estradiol. The therapeutic efficacy of Dextran can be decreased when used in combination with Desogestrel. Ethinyl Estradiol may increase the thrombogenic activities of Thalidomide. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Nitroaspirin. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Fosaprepitant. The therapeutic efficacy of Castanospermine can be decreased when used in combination with Desogestrel. The metabolism of Ethinyl Estradiol can be decreased when combined with Amiodarone. The therapeutic efficacy of Desogestrel can be decreased when used in combination with Secobarbital. The therapeutic efficacy of Antithrombin III human can be decreased when used in combination with Desogestrel. The serum concentration of Androstenedione can be increased when it is combined with Ethinyl Estradiol. The serum concentration of Ropinirole can be increased when it is combined with Ethinyl Estradiol. The metabolism of Ethinyl Estradiol can be decreased when combined with Rucaparib. The therapeutic efficacy of Ethinyl Estradiol can be decreased when used in combination with Sarilumab. The serum concentration of Medrysone can be increased when it is combined with Ethinyl Estradiol. The therapeutic efficacy of Pramlintide can be decreased when used in combination with Ethinyl Estradiol. The metabolism of Ethinyl Estradiol can be decreased when combined with Clotrimazole. The therapeutic efficacy of Glimepiride can be decreased when used in combination with Desogestrel. The metabolism of Ethinyl Estradiol can be decreased when combined with Telithromycin. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Lepirudin. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Omapatrilat. The serum concentration of Anecortave can be increased when it is combined with Ethinyl Estradiol. The serum concentration of Flumethasone can be increased when it is combined with Ethinyl Estradiol. The serum concentration of Oleoyl-estrone can be increased when it is combined with Ethinyl Estradiol. Ethinyl Estradiol may decrease the anticoagulant activities of Dextran 75. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Candoxatril. The serum concentration of Amodiaquine can be increased when it is combined with Ethinyl Estradiol. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Trandolapril. The therapeutic efficacy of Chlorpropamide can be decreased when used in combination with Desogestrel. The serum concentration of Cortisone acetate can be increased when it is combined with Ethinyl Estradiol. The serum concentration of 19-norandrostenedione can be increased when it is combined with Ethinyl Estradiol. The serum concentration of Cortexolone 17α-propionate can be increased when it is combined with Ethinyl Estradiol. The therapeutic efficacy of Glyburide can be decreased when used in combination with Desogestrel. The therapeutic efficacy of Darexaban can be decreased when used in combination with Desogestrel. The therapeutic efficacy of Deoxyspergualin can be decreased when used in combination with Desogestrel. Ethinyl Estradiol may decrease the anticoagulant activities of Dextran 40. Ethinyl Estradiol may decrease the anticoagulant activities of Ethyl biscoumacetate. The serum concentration of Desogestrel can be decreased when it is combined with Bexarotene. The therapeutic efficacy of Dalteparin can be decreased when used in combination with Desogestrel. The metabolism of Ethinyl Estradiol can be decreased when combined with Olaparib. The therapeutic efficacy of Glyburide can be decreased when used in combination with Ethinyl Estradiol. The therapeutic efficacy of Protein C can be decreased when used in combination with Desogestrel. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Prinomastat. The serum concentration of Tixocortol can be increased when it is combined with Ethinyl Estradiol. The therapeutic efficacy of Insulin Aspart can be decreased when used in combination with Desogestrel. The therapeutic efficacy of Glibornuride can be decreased when used in combination with Desogestrel. The therapeutic efficacy of Allicin can be decreased when used in combination with Ethinyl Estradiol. Ethinyl Estradiol may decrease the anticoagulant activities of Dextran 70. The serum concentration of Clocortolone can be increased when it is combined with Ethinyl Estradiol. The serum concentration of Clobetasone can be increased when it is combined with Ethinyl Estradiol. The serum concentration of Rimexolone can be increased when it is combined with Ethinyl Estradiol. Ethinyl Estradiol may decrease the anticoagulant activities of Reviparin. The therapeutic efficacy of Insulin Human can be decreased when used in combination with Desogestrel. The serum concentration of Amcinonide can be increased when it is combined with Ethinyl Estradiol. The therapeutic efficacy of Desogestrel can be decreased when used in combination with Phenobarbital. The therapeutic efficacy of Lepirudin can be decreased when used in combination with Desogestrel. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Dabigatran etexilate. The serum concentration of Prednicarbate can be increased when it is combined with Ethinyl Estradiol. The metabolism of Ethinyl Estradiol can be decreased when combined with Nefazodone. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Vildagliptin. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Darexaban. The therapeutic efficacy of Insulin Glargine can be decreased when used in combination with Ethinyl Estradiol. The therapeutic efficacy of Buformin can be decreased when used in combination with Desogestrel. The therapeutic efficacy of Dulaglutide can be decreased when used in combination with Desogestrel. Ethinyl Estradiol may decrease the anticoagulant activities of Enoxaparin. The serum concentration of Ethinyl Estradiol can be increased when it is combined with Netupitant. The therapeutic efficacy of Ethinyl Estradiol can be decreased when used in combination with Carbamazepine. The therapeutic efficacy of Metformin can be decreased when used in combination with Desogestrel. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Eslicarbazepine acetate. The therapeutic efficacy of Insulin Glulisine can be decreased when used in combination with Ethinyl Estradiol. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Sitagliptin. The therapeutic efficacy of Pioglitazone can be decreased when used in combination with Desogestrel. The therapeutic efficacy of Alogliptin can be decreased when used in combination with Desogestrel. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with 4-(2-Aminoethyl)Benzenesulfonyl Fluoride. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Enalapril. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Modafinil. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Argatroban. The serum concentration of Halcinonide can be increased when it is combined with Ethinyl Estradiol. The therapeutic efficacy of Desogestrel can be decreased when used in combination with Thiamylal. The serum concentration of Prasterone sulfate can be increased when it is combined with Ethinyl Estradiol. The serum concentration of Flunisolide can be increased when it is combined with Ethinyl Estradiol. The therapeutic efficacy of Ferulic acid can be decreased when used in combination with Desogestrel. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Rufinamide. Desogestrel may decrease the anticoagulant activities of Warfarin. The therapeutic efficacy of Insulin Aspart can be decreased when used in combination with Ethinyl Estradiol. The therapeutic efficacy of Desogestrel can be decreased when used in combination with Adapalene. The therapeutic efficacy of Thyroid, porcine can be decreased when used in combination with Ethinyl Estradiol. The serum concentration of Desogestrel can be decreased when it is combined with Aprepitant. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Imidapril. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Geldanamycin. The therapeutic efficacy of Ursodeoxycholic acid can be decreased when used in combination with Ethinyl Estradiol. The therapeutic efficacy of Chlorpropamide can be decreased when used in combination with Ethinyl Estradiol. The serum concentration of Ethinyl Estradiol can be decreased when it is combined with Cilazapril. The therapeutic efficacy of Desogestrel can be decreased when used in combination with Tretinoin. The therapeutic efficacy of Gliclazide can be decreased when used in combination with Desogestrel.