التداخل بين بوتالبيتال وباراسيتامول وكافيين وكودايين ونوريلجيسترومين وإيثينيل إستراديول

Ascorbic acid and acetaminophen may increase plasma EE concentrations, possibly by inhibition of conjugation.

CHCs have been shown to decrease plasma concentrations of acetaminophen, clofibric acid, morphine, salicylic acid, and temazepam.

Some drugs or herbal products that may decrease the effectiveness of hormonal contraceptives include phenytoin, barbiturates, carbamazepine, bosentan, felbamate, griseofulvin, oxcarbazepine, rifampicin, topiramate, rifabutin, rufinamide, aprepitant, and products containing St.

Effects of Combined Hormonal Contraceptives on Other Drugs CHCs containing EE may inhibit the metabolism of other compounds (e.g., cyclosporine, prednisolone, theophylline, tizanidine, and voriconazole) and increase their plasma concentrations.