The controversy and issues about the good and evil effects of cannabis has grown exponentially over the last 20 years. Some of the findings have detracted from the issues of criminalization to focus on its potential as a major medicinal agent. This has led to exploratory studies into the theraputic utility of cannabis. At this time a number of areas of potential medicinal applications have been identified and investigated, for example glaucoma, asthma, pain and multiple sclerosis to name a few. The legal minds, usually with little appreciation for science and medicinal investigation, are the ones that usually put obstacles in the path of future development in this very vital area. The present knowledge about these issues is scattered all over the literature. This book is an atempt to present a reader friendly account of the knowledge and issues at this time, with an emphasis on the knowledge and experience about the subject as it relates to Jamaica