التداخل بين كاربامازيبين وليفونورجيستريل وإيثينيل إستراديول

EQUETRO can reduce the effectiveness of hormonal contraceptives.

Equetro may decrease the effectiveness of hormonal contraceptives.

EQUETRO decreases the concentrations of the following drugs through induction of their metabolism: Hormonal Contraceptives (CYP3A4 Substrates) EQUETRO is a strong inducer of CYP3A4.

EQUETRO can increase the metabolism of certain hormonal contraceptives (through CYP3A4 induction) such as oral and subdermal implant contraceptives, leading to significantly lower plasma concentrations of hormones.

This can cause contraceptive failure or breakthrough bleeding.

Enzyme inducers (e.g., CYP3A4) : May decrease the effectiveness of TYBLUME or increase breakthrough bleeding.

Metabolic Enzyme Inducers Clinical effect Concomitant use of CHCs with metabolic enzyme inducers may decrease the plasma concentrations of the estrogen and/or progestin component of CHCs [see Clinical Pharmacology (12.3) ] .

Examples Aprepitant, barbiturates, bosentan, carbamazepine, efavirenz, felbamate, griseofulvin, oxcarbazepine, phenytoin, rifampin, primidone, phenylbutazone, rifabutin, rufinamide, topiramate, products containing St.

Counsel patients to use a back-up or alternative method of contraception when enzyme inducers are used with TYBLUME.

Prevention or management Counsel females to use an alternative method of contraception or a backup method when enzyme inducers are used with CHCs.