Itraconazole and Pimozide Interaction

Understanding the Itraconazole and Pimozide Interaction

FDA-approved prescribing information for these two drugs flags their combination as a major-severity interaction. Itraconazole belongs to the Azole Antifungal class and Pimozide belongs to the Typical Antipsychotic class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Itraconazole slows down the removal of pimozide from your body, which can increase the risk of serious heart side effects. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.

Context around a specific patient determines real-world impact. Itraconazole has 116 total documented interactions on file in this dataset, and Pimozide has 24. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: This combination is not allowed during treatment or for two weeks after you finish taking itraconazole. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.

An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Itraconazole or Pimozide based on a web page, speak with your prescriber or pharmacist before making any change.