CAP, Pertussis, URTI, H. pylori, and mycobacterial infections
Monitor QTc in patients with increased risk
Substrate of CYP3A4.
Multiple CYP450 interactions possible - consult a pharmacist for more detail. May increase digoxin, carbamazepine level. Use caution with QTc prolonging medications.
Antimicrobial class: Macrolide
Average serum half life: Adult: Clarithromycin: 3-7 hours 14-OH-clarithromycin (active metabolite): 5-9 hours
Route of Elimination: Urine (20-40% as unchanged drug, additional 10%-15% as active metabolite); feces (29% to 40% mostly as metabolites)