SHOULD BE GIVEN AT LEAST 2-4 HRS AFTER OR BEFORE NTACIDS,SUCRALFATE, IRON, ZINC AND MULTIVITAMIN PREPARATIONS AS THE ABSORPTION IS EFFECTED. PROLONGATION OF Q-T INTERVAL MAY BE SERIOUS IF GIVEN IN COMBINATION WITH CALCIUM CHANNEL BLOCKERS, POCAINAMIDE, QUINIDINE, SOTALOL, AMIODARONE ETC. NO SIGNIFICANT INTERACTION WITH THEOPHYLLINE,WARFARIN, DIGOXIN, RANITIDINE, ANTIDIABETICS AGENTS, PROBENECID.