Psychiatry A 25 year drug addict is brought to hospital in an intoxicated state. History suggests cocaine misuse, what is the effect of cocaine on blood vessels? A Vasoconstrictor B Vasodilator C Vasoineffective D First constrict then dilates 💡 Explanation A 25 year drug addict is brought to hospital in an intoxicated state. History suggests cocaine misuse, what is the effect of cocaine on blood vessels? ✓ Correct Answer: A. Vasoconstrictor