Erythromycin
Brand: Ery-Tab, E.E.S.
No boxed warning on the current FDA label.
- Caution
- QT prolongation and many CYP3A4 interactions; GI upset is the most common side effect.
Common side effects
- Stomach cramps and nausea
- Diarrhea
- QT prolongation
- Altered taste
Key interactions
- Moderate CYP3A4 inhibitor: raises simvastatin/lovastatin and carbamazepine levels and increases warfarin's effect
- Additive QT risk
Counseling points
- Take with food if it upsets the stomach
- Report muscle pain if you also take a statin
- Complete the full course
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