Discontinue use if severe cutaneous adverse reactions, signs & symptoms of hepatitis occur. Unsuitable for phenylketonurics. Superinfection;
Clostridium difficile-associated diarrhea; congenital or documented QT prolongation; electrolyte disturbance; clinically relevant bradycardia, cardiac arrhythmia or insufficiency; myasthenia gravis. Not to be co-administered w/ ergot derivatives. Concomitant use w/ drugs prolonging QT interval eg, class IA & III antiarrhythmics, antipsychotics, antidepressants, fluoroquinolones. Significant hepatic disease; severe renal impairment (GFR <10 mL/min). Pregnancy & lactation. Infantile hypertrophic pyloric stenosis in neonates treated up to 42 days of life. Elderly.