CBD oil comes from hemp plants which have elevated levels of cannabidiol (CBD) and reduced levels of THC. In PureKana, our CBD oils consistently have less than 0.3percent THC. CBD content of CBD petroleum may vary because of the quality of hemp that is used, in addition to varying extraction and preparation methods across sellers. Pure Kana produces a number of the best high quality CBD oil, extracted from CBD-rich hemp plants of the market.