“The cannabis plant (Cannabis sativa L.) and products there of (such as marijuana, hashish and hash oil) have a long history of use both as a medicinal agent and intoxicant.
Over the last few years there have been an active debate regarding the medicinal aspects of cannabis.
This manuscript discusses the chemical constituents of the plant with particular emphasis on the cannabinoids…”
http://www.ncbi.nlm.nih.gov/pubmed/16199061