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Drug Interactions between Diamox and dorzolamide / timolol ophthalmic

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

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Interactions between your drugs

Moderate

acetaZOLAMIDE dorzolamide ophthalmic

Applies to: Diamox (acetazolamide) and dorzolamide / timolol ophthalmic

GENERALLY AVOID: Following ophthalmic administration, brinzolamide and dorzolamide are systemically absorbed and may have additive pharmacologic effects with other, systemically administered carbonic anhydrase inhibitors. The risk of adverse effects such as drowsiness, paresthesia, tinnitus, electrolyte imbalance, metabolic acidosis, and gastrointestinal disturbances may be increased.

MANAGEMENT: The concomitant use of ocular and systemic carbonic anhydrase inhibitors is not recommended.

References

  1. "Product Information. Azopt (brinzolamide ophthalmic)." Alcon Laboratories Inc PROD (2001):
  2. "Product Information. Trusopt (dorzolamide ophthalmic)." Merck & Co., Inc PROD (2001):

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Drug and food interactions

No alcohol/food interactions were found. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

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

Carbonic anhydrase inhibitor ophthalmics

Therapeutic duplication

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

  • Diamox (acetazolamide)
  • dorzolamide/timolol ophthalmic

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.

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