ey are very sensitive to it. The drug Thorazine blocks the action of dopamine and decreases the symptoms of schizophrenia. Individuals addicted to alcohol, cocaine, and nicotine have a lower than normal level of dopamine in their mesocorticolimbic pathway. When the aforementioned drugs are used, dopamine levels go up and a pleasurable feeling results. The feeling is in part related to the fact that dopamine inhibits the CNS. This process’ end result is a lower level of dopamine in the important pathway. ...