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Drug Interactions between ephedrine / guaifenesin and Istalol

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

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Interactions between your drugs

Moderate

ePHEDrine timolol ophthalmic

Applies to: ephedrine / guaifenesin and Istalol (timolol ophthalmic)

Talk to your doctor before using ephedrine-containing products together with a beta-blocker like timolol ophthalmic. Some beta-blockers can reduce the effects of ephedrine in relaxing airway muscles to help you breathe. In addition, if you have been using timolol ophthalmic, you may not respond as well to ephedrine when it is given by injection to treat an emergency such as shock or falling blood pressure. Your healthcare provider should always be told if you are receiving, or have recently received, beta-blocker therapy. 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

ePHEDrine food

Applies to: ephedrine / guaifenesin

Both ePHEDrine and caffeine can increase blood pressure and heart rate, and combining them may enhance these effects. Talk to your doctor before using these medications, especially if you have a history of high blood pressure or heart disease. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Contact your doctor if your condition changes or you experience increased side effects. 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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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.

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