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Drug Interactions between Prograf and tecovirimat

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

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Interactions between your drugs

Moderate

tacrolimus tecovirimat

Applies to: Prograf (tacrolimus) and tecovirimat

MONITOR: Coadministration with inducers of CYP450 3A4 may decrease the plasma concentrations of sirolimus and tacrolimus, both of which are primarily metabolized by the isoenzyme.

MANAGEMENT: Given the risk of organ rejection associated with inadequate immunosuppressant drug levels, caution is advised during concomitant therapy with CYP450 3A4 inducers. Sirolimus and tacrolimus blood levels should be checked frequently and the dosage adjusted accordingly whenever a CYP450 3A4 inducer is added to or withdrawn from therapy.

References

  1. (2001) "Product Information. Prograf (tacrolimus)." Fujisawa
  2. (2001) "Product Information. Rapamune (sirolimus)." Wyeth-Ayerst Laboratories
  3. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  4. Cerner Multum, Inc. "Australian Product Information."
View all 4 references

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Drug and food interactions

Moderate

tacrolimus food

Applies to: Prograf (tacrolimus)

ADJUST DOSING INTERVAL: Consumption of food has led to a 27% decrease in the bioavailability of orally administered tacrolimus.

MANAGEMENT: Tacrolimus should be administered at least one hour before or two hours after meals.

GENERALLY AVOID: Grapefruit juice has been reported to increase tacrolimus trough concentrations. Data are limited, but inhibition of the CYP450 enzyme system appears to be involved.

MANAGEMENT: The clinician may want to recommend that the patient avoid ingesting large amounts of grapefruit juice while taking tacrolimus.

References

  1. (2001) "Product Information. Prograf (tacrolimus)." Fujisawa
  2. Hooks MA (1994) "Tacrolimus, a new immunosuppressant--a review of the literature." Ann Pharmacother, 28, p. 501-11

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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. "Product Information. Tpoxx (tecovirimat)." SIGA Technologies, Inc.

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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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