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Drug Interactions between Dexamethasone Intensol and tecovirimat

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

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Interactions between your drugs

Moderate

dexAMETHasone tecovirimat

Applies to: Dexamethasone Intensol (dexamethasone) and tecovirimat

MONITOR: Coadministration with tecovirimat may decrease the plasma concentrations of drugs that are primarily metabolized by CYP450 3A4. Tecovirimat is a weak inducer of CYP450 3A4. In a drug interaction study involving 24 healthy subjects, a single 2 mg dose of midazolam was coadministered with tecovirimat (600 mg twice daily), and the midazolam peak plasma concentration (Cmax) and systemic exposure (AUC) decreased by 39% and 32%, respectively.

MANAGEMENT: The potential for diminished pharmacologic effects of CYP450 3A4 substrates should be considered during coadministration with tecovirimat.

References (2)
  1. Cerner Multum, Inc. (2015) "Canadian Product Information."
  2. "Product Information. Tpoxx (tecovirimat)." SIGA Technologies, Inc.

Drug and food interactions

Moderate

tecovirimat food

Applies to: tecovirimat

ADJUST DOSING INTERVAL: Food may increase the extent of tecovirimat absorption following oral administration. When the recommended oral dose of tecovirimat (600 mg every 12 hours) was administered with a meal (approximately 600 calories and 25 g of fat) in healthy adults weighing less than 120 kg, tecovirimat absorption increased by 39% relative to fasting.

MANAGEMENT: Oral tecovirimat should be taken within 30 minutes after a full meal containing moderate or high fat (approximately 600 calories and 25 g of fat) with 6 to 8 ounces of water.

References (1)
  1. "Product Information. Tpoxx (tecovirimat)." SIGA Technologies, 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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