CBD oil is the second most prevalent active ingredient of cannabis, or marijuana. However, the CBD oil sold in stores is derived directly from the hemp plant, a cousin of the marijuana plant. Although there is not much hereditary difference between cannabis and hemp, the plants’ flowers and leaves contain different amounts of delta-9-tetrahydrocannabinol (THC), the cannabinoid responsible for getting “high.” Though research has shown some traces of THC in certain CBD oils, most do not contain any THC.
https://getposttop.com/how-cbd-oil-works-the-science-behind-cannabinoids
