•There are those who focus on reducing the supply of drugs by tackling those who cultivate and provide the drugs. This is where a great deal of money is spent in respect of policing and customs. The aim is to try to reduce the availability and legal trade through different policy, policing and other measures aimed at restricting the supply to consumers.
•A second way is to focus on the demand side to try and reduce the demand for drugs through various education and prevention strategies aimed at making the potential user less likely to use or become involved with problematic, harmful or illegal drug use.
•The third approach for prevention involves the effort to intervene with ex-drug users who need help to prevent them from becoming involved again after the treatment they have received