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Drug Interactions between Afinitor Disperz and Jynarque

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

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Interactions between your drugs

Moderate

everolimus tolvaptan

Applies to: Afinitor Disperz (everolimus) and Jynarque (tolvaptan)

MONITOR: Coadministration with inhibitors of CYP450 3A4 and/or P-glycoprotein may increase the blood concentrations of everolimus following oral administration. Everolimus is a substrate of both the CYP450 3A4 isoenzyme and P-glycoprotein drug efflux transporter, thus their inhibition in the intestine can enhance the absorption of everolimus.

MANAGEMENT: The possibility of prolonged and/or increased pharmacologic effects of everolimus therapy should be considered during coadministration with CYP450 3A4 and/or P-glycoprotein inhibitors, including adverse effects such as pneumonitis, stomatitis, infection, dyspnea, diarrhea, anemia, leucopenia, thrombocytopenia, hyperglycemia, and hyperlipidemia. Dosage adjustments as well as clinical and laboratory monitoring may be appropriate whenever a CYP450 3A4 inhibitor is added to or withdrawn from therapy.

References (2)
  1. (2009) "Product Information. Afinitor (everolimus)." Novartis Pharmaceuticals
  2. (2021) "Product Information. Qelbree (viloxazine)." Supernus Pharmaceuticals Inc

Drug and food interactions

Moderate

everolimus food

Applies to: Afinitor Disperz (everolimus)

GENERALLY AVOID: Grapefruit juice may significantly increase the plasma concentrations of orally administered everolimus. The mechanism is inhibition of CYP450 3A4 and P-glycoprotein activity in the gut wall by certain compounds present in grapefruit.

MANAGEMENT: Patients treated with everolimus should avoid consumption of grapefruit and grapefruit juice.

References (1)
  1. (2009) "Product Information. Afinitor (everolimus)." Novartis Pharmaceuticals
Moderate

tolvaptan food

Applies to: Jynarque (tolvaptan)

GENERALLY AVOID: Grapefruit juice may significantly increase the plasma concentrations of tolvaptan. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruits. According to the product labeling, administration of tolvaptan with grapefruit juice resulted in a 1.8-fold increase in tolvaptan systemic exposure. The clinical significance is unknown, although increased pharmacologic effects may be expected. Too rapid correction of hyponatremia increases the risk of osmotic demyelination syndrome, which is associated with dysarthria, mutism, dysphagia, lethargy, affective changes, spastic quadriparesis, seizures, coma, and death.

MANAGEMENT: Patients treated with tolvaptan should avoid consumption of grapefruits and grapefruit juice.

References (1)
  1. (2009) "Product Information. Samsca (tolvaptan)." 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.

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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