Rick Simpson oil (RSO) is a cannabis oil product. It was developed by Rick Simpson, a Canadian medical marijuana activist. RSO differs from a lot of other cannabis oils because it contains higher levels of tetrahydrocannabinol (THC). This is the main psychoactive cannabinoid in marijuana that gets people "high." Other therapeutic cannabis oils tend to contain a cannabinoid called cannabidiol (CBD) and little or no THC. In addition, Rick Simpson doesn't sell RSO. Instead, he encourages people to create their own using his methods. Total THC: 865 mg/g CBD: 5,5 mg/g 1 ML. Large number of people suffering from various diseases have been experimenting with the Rick Simpson oil, and indeed many have anecdotally reported staggering results of remission.