| Nausea, Vomiting, Constipation, Paralytic Ileus, Biliary Tract Spasms, Dry Mouth, Sedation, Somnolence, Clouded Sensorium, Euphoria, Dizziness, Lightheadedness, Headache, Hallucination, Syncope, Tachycardia, Bradycardia, Hypotension, Cardiac Arrest, Shock, Urinary retention, Respiratory depression OR Arrest, Pruritis, Urticaria, Diaphoresis, Physical dependance, Phlebitis ( after IV), Pain (Site of Inj.), Local Tissue Irritation, Induration (after SC) |