Patients w/ known QT interval prolongation, uncorrected hypokalemia, ongoing proarrhythmic conditions (eg, clinically significant bradycardia, acute myocardial ischemia). Concomitant use w/ grapefruit juice. Renal or hepatic impairment. Concomitant use with potent or moderate CYP3A4 inhibitors. Concomitant use of CYP3A4 substrates. Glucose-galactose malabsorption.
Tab: Not recommended in childn <12 yr. Galactose intolerance or Lapp lactase deficiency. Avoid during pregnancy. Lactation. Elderly ≥65 yr.
Oral soln: Contains sucrose (may be harmful to teeth). Fructose intolerance, sucrase-isomaltase insufficiency. Methyl parahydroxybenzoate may cause allergic reactions (possibly delayed). Not recommended in childn <2 yr.
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