<p>With Diltiazem headache, ankle oedema, hypertension, dizziness, flushing, rashes (toxic erythema), nausea and Gl disturbances may occur. Transient elevation in liver enzyme values and occasionally hepatitis have been reported. Diltiazem may depress cardiac conduction and has occasionally led to AV block, bradycardia and rarely asystoleor sinus arrest.</p>