The central nervous system rewarding properties of ethanol, cocaine, and heroin may activate a common catecholaminergic reward system in the mesolimbic circuitry of the brain. Driving-under-the-influence (DUI) offenders with either alcohol- or cocaine-related problems were studied. The neuronutrients SAAVE and Tropamine significantly reduced relapse rates and enhanced recovery in these DUI outpatient offenders over a 10-week period. Follow-up on both the SAAVE and Tropamine groups after 10 months revealed a 73% and a 53% overall recovery rate, respectively. These clinical results favor the use of these neuronutrients as adjuncts to psychological therapeutic modalities.