While other side effects are not commonly experienced with this medication because it is only administered as a single dose, the following effects may occur: headache, drowsiness, lightheadedness, confusion, blurred vision, twitching, convulsions, sensations of hot or cold, slow heartbeat, fast heart rate with or without palpitations. Other effects include hallucinations and paranoid delusions, restlessness, excitement, transient irritability and insomnia.
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