However, like we just mentioned CBD oil for pain management that has been sourced from industrial hemp grown under the farm bill is in fact legal to buy and sell. The best CBD oil brands that we cover here on this site, claim to extract their concentrates from U.S.-based industrial hemp supplies, which if true, are 100% legal since they contain negligible amounts of THC.
Whole plant extracts also contain THC, although usually not in a large enough amount to have any psychological effects. When administered together, CBD, THC, trace cannabinoids as well as terpenes, produce what is known as an entourage effect. This synergistic relationship between cannabinoids, fatty acids and terpenes has been shown to increase the healing properties of each.