Interaction entre Mifépristone et Rifampicine

Decrease AUC by 84% Cortisol Receptor Blocker Mifepristone Prevention or Management: Avoid concomitant use Decrease exposure Hepatitis C Antiviral Prevention or Management: Avoid concomitant use Daclatasvir Decrease AUC by 79% Simeprevir Decrease AUC by 48% Sofosbuvir Decrease AUC by 72% Coadministration of sofosbuvir with rifampin may decrease sofosbuvir plasma…

Decrease AUC by 56% Narcotic Analgesics Oxycodone Decrease AUC by 86% Morphine Decrease exposure Progestin Antagonist Mifepristone Prevention or Management: Refer to the posttreatment assessment in the mifepristone prescribing information to verify that treatment has been successful.

Telaprevir Decrease AUC by 92% Systemic Hormonal Contraceptives Prevention or Management: Advise patients to change to non-hormonal methods of birth control during rifampin therapy Estrogens Decrease exposure Progestins Anticonvulsants Phenytoin Administered with rifampin 450 mg daily Decrease exposure Antiarrhythmics Disopyramide Decrease exposure Mexiletine…

The patient should be advised that the reliability of oral or other systemic hormonal contraceptives may be affected; consideration should be given to using alternative contraceptive measures.

CYP3A inducers: Do not use mifepristone with CYP3A inducers ( 7.3 ).

Avoid co-administration of mifepristone and CYP3A inducers such as rifampin, rifabutin, rifapentin, phenobarbital, phenytoin, carbamazepine, and St.

The dose of mifepristone should be limited to 900 mg, and strong inhibitors of CYP3A should be used only when necessary. [See Dosage and Administration ( 2.4 ), Warnings & Precautions ( 5.6 ), and Clinical Pharmacology ( 12.3 )] 7.3 CYP3A Inducers No medications that induce CYP3A have been studied when co-administered with mifepristone.