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Drug Interactions between tbo-filgrastim and Votrient

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

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Interactions between your drugs

Moderate

PAZOPanib tbo-filgrastim

Applies to: Votrient (pazopanib) and tbo-filgrastim

ADJUST DOSING INTERVAL: The safety and efficacy of hematopoietic growth factors such as colony-stimulating factors (G-CSF and GM-CSF) and stem cell factors (SCF) given simultaneously with cancer chemotherapy have not been established. Theoretical concerns exist regarding their concomitant administration because hematopoietic growth factors stimulate myeloid cell proliferation while antineoplastic agents primarily target rapidly dividing cells.

MANAGEMENT: Because of the potential sensitivity of rapidly dividing myeloid cells to cancer chemotherapy, hematopoietic growth factors should not be used within 24 hours before or 24 hours after administration of antineoplastic agents.

References

  1. (2002) "Product Information. Neupogen (filgrastim)." Amgen
  2. (2001) "Product Information. Leukine (sargramostim)." Immunex Corporation
  3. (2001) "Product Information. Stemgen (ancestim)." Amgen
  4. (2013) "Product Information. Granix (tbo-filgrastim)." Teva Pharmaceuticals USA
View all 4 references

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Drug and food interactions

Major

PAZOPanib food

Applies to: Votrient (pazopanib)

GENERALLY AVOID: Grapefruit juice may increase the plasma concentrations of pazopanib. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruits. Although not studied, the interaction may increase the risk of QT interval prolongation and torsade de pointes arrhythmia as well as severe and fatal hepatotoxicity associated with the use of pazopanib.

ADJUST DOSING INTERVAL: Food increases the oral bioavailability of pazopanib. The mechanism of interaction is unknown. Administration of pazopanib with a high-fat or low-fat meal results in an approximately 2-fold increase in peak plasma concentration (Cmax) and systemic exposure (AUC).

MANAGEMENT: Patients treated with pazopanib should avoid consumption of grapefruit, grapefruit juice, and any supplement containing grapefruit extract. Pazopanib should be administered at least one hour before or two hours after a meal.

References

  1. (2009) "Product Information. Votrient (pazopanib)." GlaxoSmithKline

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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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