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Drug Interactions between ATryn and Bevyxxa

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

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Interactions between your drugs

Major

antithrombin recombinant betrixaban

Applies to: ATryn (antithrombin (recombinant)) and Bevyxxa (betrixaban)

MONITOR CLOSELY: Concomitant use of betrixaban with other agents that alter hemostasis such as aspirin, nonsteroidal anti-inflammatory drugs (NSAIDs), platelet aggregation inhibitors, other anticoagulants, thrombolytic agents, or drugs that cause thrombocytopenia may increase the risk of bleeding. In patients receiving neuraxial anesthesia or spinal puncture, the risk of developing an epidural or spinal hematoma during betrixaban therapy may also be increased by the concomitant use of other drugs that affect coagulation. The development of epidural and spinal hematoma can lead to long-term neurological injury or permanent paralysis.

MANAGEMENT: Caution is recommended if betrixaban must be used with other agents that alter hemostasis. Some authorities consider concomitant treatment with other anticoagulants to be relatively contraindicated except under special circumstances such as switching oral anticoagulant therapy, or when unfractionated heparin is used at doses required to maintain a patent central venous or arterial catheter. Patients should be monitored for increased anticoagulant effects and bleeding complications. In patients undergoing neuraxial intervention, coadministration of these agents should be approached with caution and only after thorough assessment of risks and benefits. Besides bleeding complications, patients should also be monitored frequently for signs and symptoms of neurologic impairment such as midline back pain, sensory and motor deficits (numbness or weakness in lower limbs), and bowel or bladder dysfunction.

References

  1. "Product Information. Bevyxxa (betrixaban)." Portola Pharmaceuticals (2017):

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Drug and food interactions

Moderate

betrixaban food

Applies to: Bevyxxa (betrixaban)

ADJUST DOSING INTERVAL: Food reduces the oral bioavailability of betrixaban. When administered with a low-fat (900 calories; 20% fat) or high-fat (900 calories; 60% fat) meal, betrixaban peak plasma concentration (Cmax) and systemic exposure (AUC) decreased relative to administration in the fasting state by an average of 70% and 61%, respectively, with the low-fat meal and 50% and 48%, respectively, with the high-fat meal. The effect of food on betrixaban pharmacokinetics could be observed for up to 6 hours after meal intake.

MANAGEMENT: The manufacturer recommends taking betrixaban at the same time each day with food.

References

  1. "Product Information. Bevyxxa (betrixaban)." Portola Pharmaceuticals (2017):

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Therapeutic duplication warnings

Therapeutic duplication is the use of more than one medicine from the same drug category or therapeutic class to treat the same condition. This can be intentional in cases where drugs with similar actions are used together for demonstrated therapeutic benefit. It can also be unintentional in cases where a patient has been treated by more than one doctor, or had prescriptions filled at more than one pharmacy, and can have potentially adverse consequences.

Duplication

Anticoagulants

Therapeutic duplication

The recommended maximum number of medicines in the 'anticoagulants' category to be taken concurrently is usually one. Your list includes two medicines belonging to the 'anticoagulants' category:

  • ATryn (antithrombin (recombinant))
  • Bevyxxa (betrixaban)

Note: In certain circumstances, the benefits of taking this combination of drugs may outweigh any risks. Always consult your healthcare provider before making changes to your medications or dosage.


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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.