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Drug Interactions between belumosudil and Grifulvin V

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

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Interactions between your drugs

Moderate

griseofulvin belumosudil

Applies to: Grifulvin V (griseofulvin) and belumosudil

Griseofulvin may reduce the blood levels of belumosudil, which may make the medication less effective in some cases. Contact your doctor if your symptoms worsen or your condition changes. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

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Drug and food interactions

Moderate

griseofulvin food

Applies to: Grifulvin V (griseofulvin)

You may be advised to take griseofulvin with a fatty meal to increase its absorption into your body. This will make it easier for your body to absorb the medication. The combination of alcohol and griseofulvin may cause flushing and a fast heart rate. Use alcohol cautiously during treatment with griseofulvin.

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Moderate

belumosudil food

Applies to: belumosudil

Consumer information for this interaction is not currently available.

ADJUST DOSING INTERVAL: Administration with food increases the oral bioavailability of belumosudil. The mechanism has not been described. Administration of belumosudil (200 mg single oral dose) in healthy subjects, with a fatty and calorie-rich meal (approximately half of the calories were contained in the fat) increased the mean belumosudil peak plasma concentration (Cmax) and area under the concentration-time curve (AUC) by 120% and 100%, respectively, compared to administration under fasting conditions. The time to reach peak concentration (Tmax) was delayed by 30 minutes. Administration of oral belumosudil 200 mg once daily with food in patients with chronic graft-versus-host disease (chronic GVHD) lead to steady-state concentrations of the drug with an accumulation ration of 1.4.

MANAGEMENT: To ensure maximal oral absorption, belumosudil should be administered with a meal, every day at the same time.

References

  1. (2024) "Product Information. Rezurock (belumosudil)." Sanofi
  2. (2024) "Product Information. Rezurock (belumosudil)." Kadmon Pharmaceuticals, 11/2023

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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