<human>:  Which street drugs brings in the most profit on average?
<bot>: There is no easy way to summarize that information, as street drugs are illegal and information is closely protected. However, based on available data, street drugs in the United States that generate the greatest financial revenue include cocaine, heroin, and methamphetamine. These drugs can be extremely harmful and are strictly controlled and regulated. Please contact legal authorities if you have any questions or concerns about drug use, abuse or trafficking.