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To help minimize complications, give your healthcare provider a current list of all vitamins, herbal supplements, and prescription and nonprescription medications you are taking before starting treatment with Norpace CR. Drug interactions could occur when this antiarrhythmia medication is combined with products like Tylenol PM, Benadryl, and St. John's wort. Some of these combinations can increase your risk for serious side effects or other problems.

An Overview of Interactions With Norpace CR

Norpace® CR (disopyramide) can potentially interact with a number of other medications. Some of the products that may lead to drug interactions with Norpace CR include but are not limited to:
  • Anticholinergic medications, such as:
  • Certain other antiarrhythmia medications, such as:
  • CYP 3A4 inducer medications, such as:
  • CYP 3A4 inhibitor medications, such as:
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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