Tolbutamide + Zafirlukast Interaction
Unknowninteraction on record
Description
No formal drug-drug interaction studies with zafirlukast and other drugs known to be metabolized by the cytochrome P450 2C9 isoenzyme (eg, tolbutamide, phenytoin, carbamazepine) have been conducted; however, care should be exercised when zafirlukast is coadministered with these drugs.
Source: FDA drug label - zafirlukast