Zafirlukast Disease Interactions
There is 1 disease interaction with zafirlukast:
Zafirlukast (Includes Zafirlukast) ↔ Liver Disease
Severe Potential Hazard, High plausibility
Applies to: Liver Disease, Cirrhosis
The use of zafirlukast may be associated with elevations of one or more liver enzymes as well as life-threatening hepatic failure. Cases of liver injury without other attributable cause have been reported from postmarketing surveillance of patients treated with the recommended dosage of zafirlukast (40 mg/day). Although most cases have been reversible following drug discontinuation, fulminant hepatitis and progression to hepatic failure, liver transplantation, and death have rarely been reported. Zafirlukast is also primarily metabolized by the liver. In patients with hepatic cirrhosis, serum zafirlukast concentrations may be 50% to 60% higher than in normal patients. Zafirlukast is contraindicated in patients with hepatic impairment including hepatic cirrhosis. Periodic serum transaminase testing is recommended to enable early detection of drug-induced hepatic injury. Patients should be advised to contact their physician immediately if they experience signs or symptoms of liver dysfunction (e.g., right upper quadrant abdominal pain, nausea, fatigue, lethargy, pruritus, jaundice, flu-like symptoms, anorexia, and enlarged liver). Zafirlukast should be discontinued, and liver function tests performed immediately if hepatic injury is suspected. The drug should not be resumed if hepatic injury is confirmed. Patients in whom zafirlukast was withdrawn because of hepatic injury where no other attributable cause is identified should not be re-exposed to zafirlukast.
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- Reinus JF, Persky S, Burkiewicz JS, Quan D, Bass NM, Davern TJ "Severe liver injury after treatment with the leukotriene receptor antagonist zafirlukast." Ann Intern Med 133 (2000): 964-8
zafirlukast drug Interactions
There are 279 drug interactions with zafirlukast
zafirlukast alcohol/food Interactions
There is 1 alcohol/food interaction with zafirlukast
Drug Interaction Classification
The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.
|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.|
Do not stop taking any medications without consulting your healthcare provider.
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