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Drug Interactions between belzutifan and Celexa

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

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Interactions between your drugs

Moderate

citalopram belzutifan

Applies to: Celexa (citalopram) and belzutifan

MONITOR: Coadministration with belzutifan may decrease the plasma concentrations and therapeutic effects of drugs that are substrates of CYP450 3A4. The extent of the decrease in concentration and effects may be more pronounced in patients who are dual uridine diphosphate glucuronosyltransferase (UGT) 2B17 and CYP450 2C19 poor metabolizers. The proposed mechanism is increased clearance due to belzutifan-mediated induction of CYP450 3A4. Concomitant use of belzutifan (120 mg once daily) with midazolam (a sensitive CYP450 3A4 substrate) decreased the midazolam systemic exposure (AUC) and peak plasma concentration (Cmax) by 40% and 34%, respectively. In patients with higher belzutifan concentrations (e.g., dual UGT 2B17 and CYP450 2C19 poor metabolizers) the AUC of midazolam is predicted to decrease by up to 70%.

MANAGEMENT: Caution is advised when belzutifan is used concomitantly with drugs that undergo metabolism by CYP450 3A4. Dosage adjustments as well as clinical and laboratory monitoring may be appropriate for some drugs whenever belzutifan is added to or withdrawn from therapy. Patients should be monitored for diminished therapeutic effects.

References

  1. (2021) "Product Information. Welireg (belzutifan)." Merck & Co., Inc

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Drug and food interactions

Moderate

citalopram food

Applies to: Celexa (citalopram)

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

  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
View all 4 references

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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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