Dosing
CrCl > 80: 500 mg po q 6 x 3d; may need to be repeated in a week.
CrCl 80-50:
CrCl 50-10:
CrCl < 10:
Hemodialysis:
Peritoneal dialysis:
Important side effects
Long qt and ventricular arrhythmias.
Important drug interactions
Antipsychotics, arsenic trioxide, astemizole, aurothioglucose, bepridil, chloral hydrate, chloroquine, chlorpromazine, cisapride, clarithromyci, class i antiarrhythmic agents, class ia antiarrhythmic agents, class iii antiarrhythmic agents, cotrimoxazole, dolasetron, droperidol, enflurane, erythromycin, erythromycin/sulfisoxazole, fluconazole, fluoxetine, foscarnet, gemifloxacin, halothane, isoflurane, isradipine, itraconazole, levomethadyl, lidoflazine, mefloquin, mesoridazine, octreotide, pentamadine, pimozide, probucol, prochlorperazine, spiramycin, sulfamethoxazole, telithromycin, telithromycin, thioridazine, tricyclic antidepressants, trifluoperazine, trimethoprim, vasopressin, venlafaxine, ziprasidone, zolmitriptan.