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Drug Interactions between erythromycin / sulfisoxazole and Quin-G

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

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Interactions between your drugs

Major

quiNIDine erythromycin

Applies to: Quin-G (quinidine) and erythromycin / sulfisoxazole

Talk to your doctor before using quiNIDine together with erythromycin. Combining these medications can increase the blood levels and effects of quiNIDine. This may increase the risk of an irregular heart rhythm that may be serious, as well as other side effects of quiNIDine such as dizziness, lightheadedness, nausea, vomiting, diarrhea, and visual disturbances. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Let your doctor know if you experience headache, confusion, vomiting, diarrhea, ringing in the ears, hearing loss, blurred or double vision, or sensitivity to light, as these may be signs and symptoms of excessive quiNIDine levels. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, shortness of breath, or fast or pounding heartbeats. 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

quiNIDine food

Applies to: Quin-G (quinidine)

Do not consume grapefruit or grapefruit juice during treatment with quiNIDine unless specifically directed otherwise by your doctor. Grapefruit and grapefruit juice can interact with quiNIDine and increase the levels of quiNIDine in your body. If you are already consuming grapefruit products, do not increase or decrease the amount of these products in your diet without first talking to your doctor.

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Moderate

erythromycin food

Applies to: erythromycin / sulfisoxazole

Food decreases the levels of erythromycin in your body. Take erythromycin on an empty stomach at least 30 minutes before or 2 hours after a meal. This will make it easier for your body to absorb the medication. However, some erythromycin products may be taken without regard to meals. Ask your healthcare provider about your particular prescription if you are uncertain of how to take it. Grapefruits and grapefruit juice may increase erythromycin levels but how this may affect you is not known. Do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor.

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Minor

erythromycin food

Applies to: erythromycin / sulfisoxazole

Information for this minor interaction is available on the professional version.

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.


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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.