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Drug Interactions between celecoxib and zafirlukast

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

zafirlukast celecoxib

Applies to: zafirlukast and celecoxib

MONITOR: Coadministration with inhibitors of CYP450 2C9 may increase the plasma concentrations of celecoxib, which is primarily metabolized by the isoenzyme. The possibility of prolonged and/or increased pharmacologic effects of celecoxib should be considered.

MANAGEMENT: Clinical monitoring for altered effects of celecoxib is recommended following initiation or discontinuation of a CYP450 2C9 inhibitor. Dosage adjustments may be required if an interaction is suspected. Patients should be advised to notify their physician if they experience potential signs and symptoms of celecoxib toxicity such as abdominal pain, black or tarry stools, nausea, vomiting, lethargy, fluid retention, swelling of legs, and worsening heart failure.

References (1)
  1. (2001) "Product Information. Celebrex (celecoxib)." Searle

Drug and food interactions

Moderate

zafirlukast food

Applies to: zafirlukast

ADJUST DOSING INTERVAL: Food may reduce the oral absorption and bioavailability of zafirlukast. In two separate studies, one using a high-fat and the other a high-protein meal, administration of zafirlukast with food reduced the mean bioavailability by approximately 40%.

MANAGEMENT: To ensure maximal oral absorption, zafirlukast should be administered at least 1 hour before or 2 hours after meals.

References (1)
  1. (2001) "Product Information. Accolate (zafirlukast)." Astra-Zeneca Pharmaceuticals

Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

See also

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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