Enforcement
There is an extensive illegal trans-national industry supplying prohibited drugs for recreational use. Thus, while drug prohibition laws remain in force, there is perpetual law enforcement action directed against the illegal industry, which also impacts supply for self-medication.
Although it is directed against illegal recreational drugs, and not against drugs licensed under prohibition laws or against drugs beyond the scope of prohibition laws, the law enforcement is sometimes called the war on drugs.
Read more about this topic: Drug Control Laws