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Drug Interactions between Avonex and Extavia

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

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Interactions between your drugs

No interactions were found between Avonex and Extavia. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

Avonex

A total of 339 drugs are known to interact with Avonex.

Extavia

A total of 339 drugs are known to interact with Extavia.

Drug and food interactions

Moderate

interferon beta-1b food

Applies to: Extavia (interferon beta-1b)

Interferon beta-1b may cause liver problems, and using it with other medications that can also affect the liver such as ethanol (alcohol) may increase that risk. You should avoid or limit the use of alcohol while being treated with these medications. Call your doctor immediately if you have fever, chills, joint pain or swelling, unusual bleeding or bruising, skin rash, itching, loss of appetite, fatigue, nausea, vomiting, abdominal pain, dark urine, pale stools, and/or yellowing of the skin or eyes, as these may be signs and symptoms of liver damage. Talk to your doctor or pharmacist if you have any questions or concerns. 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

Immunomodulators for multiple sclerosis

Therapeutic duplication

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

  • Avonex (interferon beta-1a)
  • Extavia (interferon beta-1b)

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.

Duplication

Beta interferons

Therapeutic duplication

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

  • Avonex (interferon beta-1a)
  • Extavia (interferon beta-1b)

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