التداخل بين ديكساميثازون وإيفاكافتور

• Avoid concomitant use of strong CYP3A4 inhibitors or inducers.

Avoid coadministration of strong CYP3A4 inhibitors or consider alternative medication that are not strong CYP3A4 inhibitors.

If concomitant use of strong CYP3A4 inhibitors cannot be avoided, closely monitor for adverse drug reactions.

( ‎7.2 ) 7.1 Effect of Other Drugs on HEMADY Strong CYP3A4 inhibitors Coadministration of strong and moderate CYP3A4 inhibitors increased dexamethasone exposure [see Clinical Pharmacology (‎ 12.3 )] , which may increase the risk of adverse reactions [see Warnings and Precautions (‎ 5 ) and Adverse Reactions (‎ 6 )] .

Concomitant Use with CYP3A Inducers Use of KALYDECO with strong CYP3A inducers, such as rifampin, substantially decreases the exposure of ivacaftor, which may reduce the therapeutic effectiveness of KALYDECO.

Although other risk factors were present in some cases (such as corticosteroid use and/or exposure to radiation), a possible risk attributable to KALYDECO cannot be excluded.

Inducers of CYP3A Co-administration with rifampin, a strong CYP3A inducer, significantly decreased ivacaftor exposure (AUC) by approximately 9-fold.

Use with CYP3A inducers: Concomitant use with strong CYP3A inducers (e.g., rifampin, St.

Therefore, co-administration of KALYDECO with strong CYP3A inducers (e.g., rifampin, St.