I totally agree with Ensapa's quote : "I believe that one of the vows one must take as a Buddhist is the vow of not ingesting intoxicants, and in this case, intoxicants means drugs as they intoxicate the mind and makes it blur, instead of making it sharp, so it is for sure that drugs and Buddhism do not mix. However, the hippies of the 60s do take drugs and see them as a gateway to spiritual bliss and many of them went to nepal or india to search for a holy teacher of sorts, so the association with drugs and meditation came from there.
Just because popular culture associated it, dosent make it real or positive."
Buddhism and drugs just don't mix , one of the main precepts or vows in taking refuge is to abstain from intoxicating the mind . Of course there would be scores of people who would love to believe that and wants to validate their addiction as a means to be more spiritual, which is a whole bunch of nonsense. Drugs that alters the mind's chemistry is proven through years of scientific research to be damaging to the brain and overall health of the person. Which religion preaches one to take drugs that damages ones well being? None.