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Drug Interactions between felbamate and montelukast

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

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Interactions between your drugs

Moderate

felbamate montelukast

Applies to: felbamate and montelukast

MONITOR: Coadministration with inducers of hepatic CYP450 isoenzymes may decrease the plasma concentrations of montelukast, which is metabolized by CYP450 2C8, 2C9, and 3A4 . When a single 10 mg dose of montelukast was administered in combination with phenobarbital, montelukast systemic exposure (AUC) decreased by approximately 40%.

MANAGEMENT: No dosage adjustment for montelukast is recommended when used concomitantly with CYP450 inducers. However, clinical monitoring for potentially reduced therapeutic effects may be appropriate, especially for potent inducers such as carbamazepine, dexamethasone, enzalutamide, phenobarbital, phenytoin, rifamycins, and St. John's wort.

References (1)
  1. (2001) "Product Information. Singulair (montelukast)." Merck & Co., Inc

Drug and food interactions

Moderate

felbamate food

Applies to: felbamate

GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of CNS-active agents. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.

MANAGEMENT: Patients receiving CNS-active agents should be warned of this interaction and advised to avoid or limit consumption of alcohol. Ambulatory patients should be counseled to avoid hazardous activities requiring complete mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.

References (4)
  1. Warrington SJ, Ankier SI, Turner P (1986) "Evaluation of possible interactions between ethanol and trazodone or amitriptyline." Neuropsychobiology, 15, p. 31-7
  2. Gilman AG, eds., Nies AS, Rall TW, Taylor P (1990) "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: Pergamon Press Inc.
  3. (2012) "Product Information. Fycompa (perampanel)." Eisai Inc
  4. (2015) "Product Information. Rexulti (brexpiprazole)." Otsuka American Pharmaceuticals Inc

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.

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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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