Final answer:
If signs of overdose occur, the first thing a patient should do is seek immediate medical attention.
Step-by-step explanation:
If signs of overdose occur, the first thing a patient should do is seek immediate medical attention. Overdose symptoms can vary depending on the substance involved, but common signs may include sluggishness, incoordination, difficulty in thinking, slowness of speech, drowsiness, shallow breathing, and even coma or death in severe cases. It is essential to call emergency services or go to the nearest hospital if any signs of overdose are observed.