A new area for medication surveillance. Interactions of medicines with street drugs

The use of drugs of abuse is not uncommon nowadays. Use of drugs of abuse may vary from the relatively innocent use of cannabis to severe forms of addiction to heroin and cocaine. Many users of drugs of abuse are being treated with medicines because of medical or psychiatric illness, so many drug interactions with drugs of abuse are possible. Cigarette smoking can also affect metabolic enzymes. It mostly gives enzyme induction, causing increased clearance of some drugs