Wellbutrin increases dopamine transmission. It can, to some degree, decrease the craving for cocaine. Cocaine goes to the tegmental of the brain. The tegmental fires out all this dopamine, and dopamine gives you a real good, feel-good effect. That's why Sigmund Freud prescribed cocaine 100 years ago for the treatment of depression.
Cocaine increases dopamine.
Dopamine makes you feel good. I will often give my cocaine addicts and my narcotic addicts Wellbutrin for that purpose. For the anxiety that they often experience, you don't want to give them a benzodiazepine. You don't like to give addicts a benzodiazepine. I'm having a lot of luck with Neurontin.