Medicine Name: Amicon 25mg Tablet. Composition: Amitriptyline (25mg). Side Effects: Constipation Dryness in mouth Orthostatic hypotension sudden lowering of blood pressure on standing Weight gain Aggressive behavior Nasal congestion stuffy nose Sleepiness Dizziness Headache Decreased libido Nausea Fatigue Confusion Tremors Speech disorder Palpitations Taste change Paresthesia tingling or pricking sensation Abnormality of voluntary movements Loss of accommodation Atrioventricular block Micturition disorders Erectile dysfunction Abnormal E C G Decreased sodium level in blood.