Adjustment in the propranolol dosage may be warranted. The combination of Tilazem with digitalis glycosides can inhibit digitalis glycoside metabolism and elevate serum levels which may cause digitalis glycoside toxicity. Cimetidine's inhibition of the hepatic cytochrome P-450 system causes an increase in plasma diltiazem concentrations. An adjustment in the diltiazem dose may be warranted. Known symptoms of overdosage and particulars of its treatment See side-effects.
Treatment is symptomatic and supportive.
Further gastro-intestinal absorption can be limited by gastric lavage. White, ellipsoid tablet, scored on one side and monogrammed P-D 90 on other side. White, biconvex tablet, monogrammed 'D120' on one side.