Azithromycin
Brand: Zithromax (Z-Pak)
No boxed warning on the current FDA label.
- Caution
- QT prolongation and fatal arrhythmias in at-risk patients; liver injury.
- Storage
- Reconstituted multi-dose suspension: room temperature or refrigerated, discard after 10 days; the 1 g single-dose packet is mixed in 2 oz of water and taken immediately.
Common side effects
- Diarrhea
- Nausea
- Abdominal pain
- Vomiting
Key interactions
- Antacids with aluminum or magnesium reduce absorption
- May add to QT-prolonging drugs
- Can increase warfarin effect
Counseling points
- Finish the full course as directed
- Separate from antacids by a couple hours
- Report irregular or fast heartbeat
- Report severe or watery diarrhea
- May be taken with or without food
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