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Drug Interactions between allopurinol and Krystexxa

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

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Interactions between your drugs

Major

allopurinol pegloticase

Applies to: allopurinol and Krystexxa (pegloticase)

Using pegloticase together with allopurinol is not recommended. Treatment with pegloticase requires monitoring of uric acid levels in the blood to reduce the risk of side effects such as allergic and infusion reactions, and allopurinol can interfere with the monitoring. You should stop taking allopurinol before your doctor begin treatment with pegloticase, and avoid taking it until the infusion is complete. 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.

Drug and food interactions

Moderate

allopurinol food

Applies to: allopurinol

Allopurinol should generally be taken after a meal to reduce side effects. If your daily dose exceeds 300 mg, you may also ask your healthcare provider if it is okay to divide the total daily dose into smaller doses given more frequently instead of once a day, as this may also reduce stomach upset that can happen with allopurinol. It is best to avoid or limit the consumption of alcohol, as it can increase drowsiness or other nervous system side effects of allopurinol. You should also avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medication affects you. 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.

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

Anti-gout agents

Therapeutic duplication

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

  • allopurinol
  • Krystexxa (pegloticase)

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.

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.

Medical Disclaimer