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Drug interactions between Norpace and Tenormin

Results for the following 2 drugs:
Norpace (disopyramide)
Tenormin (atenolol)

Interactions between your drugs

Major

atenolol disopyramide

Applies to: Tenormin (atenolol) and Norpace (disopyramide)

Using atenolol together with disopyramide can increase the effects of disopyramide. You should contact your doctor if you experience dizziness, fainting, palpitations, slow or fast pulse, or irregular heartbeats. You may need a dose adjustment or special tests to safely use both medications. 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.

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Drug and food interactions

Moderate

atenolol food

Applies to: Tenormin (atenolol)

You may take atenolol with or without food, but take it the same way every time. Avoid consumption of large amounts of orange juice to prevent any changes in your atenolol levels. Orange juice could decrease the effectiveness of atenolol.

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Moderate

disopyramide food

Applies to: Norpace (disopyramide)

Grapefruit juice may increase the blood levels and effects of certain medications such as disopyramide. You may want to limit your consumption of grapefruit and grapefruit juice during treatment with disopyramide. However, if you have been regularly consuming grapefruit or grapefruit juice with disopyramide, do not alter the amounts of these products in your diet without first talking to your doctor or other healthcare professional. Contact your doctor if your condition changes or you experience increased side effects. Orange juice is not expected to interact.

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Therapeutic duplication warnings

No therapeutic duplications were found for your selected drugs.

Drug Interaction Classification

The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
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 information available.

Do not stop taking any medications without consulting your healthcare provider.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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