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Drug interactions between dexamethasone and rolapitant

Results for the following 2 drugs:

Interactions between your drugs


dexamethasone ↔ rolapitant

Applies to:dexamethasone and rolapitant

Consumer information for this interaction is not currently available.

MONITOR: Coadministration with moderate inducers of CYP450 3A4 may decrease the plasma concentrations of rolapitant, which is primarily metabolized by the isoenzyme. When the potent CYP450 3A4 inducer rifampin was administered at 600 mg once daily for 7 days before and 7 days after a single 180 mg dose of rolapitant, mean rolapitant peak plasma concentration (Cmax) and systemic exposure decreased by 30% and 85%, respectively, compared to administration of rolapitant alone. Mean half-life of rolapitant decreased from 176 hours to 41 hours with rifampin. No data are available for other, less potent CYP450 3A4 inducers.

MANAGEMENT: The potential for diminished pharmacologic effects of rolapitant should be considered during coadministration with CYP450 3A4 inducers. Alternative treatments may be required if an interaction is suspected.


  1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  2. "Product Information. Varubi (rolapitant)." Tesaro Inc., Waltham, MA.

Drug and food interactions

No results found in our database - however, this does not necessarily mean no interactions exist. Always consult with your doctor or pharmacist.

Therapeutic duplication warnings

No therapeutic duplications were found for your selected drugs.

Drug Interaction Classification

The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
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 information available.

Do not stop taking any medications without consulting your healthcare provider.

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