In turn, its influence on the reward circuit can lead a user to bypass survival activities and repeat drug use. Chronic cocaine use can lead to a cocaine addiction and in some cases damage the brain and other organs. An addict will continue to use cocaine even when faced with adverse consequences.
vasodilator (vÄÂ´zÅdÄ«Â´lÄtur), n 1. an agent that causes dilation of the blood vessels. n 2. a drug that relaxes the smooth muscle walls of the blood vessels and increases their diameter.
Vasoconstrictors or vasopressors are the substances that are causing vasoconstriction. Vasoconstrictor is any substance that makes the layer of smooth muscle in the blood vessels to contract and as a result constricting the width of the blood vessel.asoconstrictor is any substance that makes the layer of smooth muscle in the blood vessels to contract and as a result constricting the width of the blood vessel.