Tasimelteon and Metoprolol Interaction

Understanding the Tasimelteon and Metoprolol Interaction

FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Tasimelteon belongs to the Melatonin Receptor Agonist class and Metoprolol belongs to the Beta-Blocker class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: This heart medicine can lower the amount of natural sleep chemicals your body produces. 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. Tasimelteon has 5 total documented interactions on file in this dataset, and Metoprolol has 18. 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: Tell your doctor if your sleep medicine does not seem to be working while taking this heart medication. 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 Tasimelteon or Metoprolol based on a web page, speak with your prescriber or pharmacist before making any change.