Cannabidiol (CBD) oil is legal under United States federal law, regardless of a prescription.
With the varying and sometimes contradictory cannabinoid-related laws, it’s not uncommon to be confused on CBD’s legality status. But, CBD is legal to purchase and consume under federal law, provided that it is extracted from hemp. Hemp is a non-psychoactive variety of Cannabis sativa L. that contains less than 0.3% THC.