التداخل بين بوتالبيتال وباراسيتامول وديسوجيستريل وإيثينيل إستراديول

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

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

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.