Cannabidiol (CBD) is a chemical in the Cannabis sativa plant, also known as cannabis or hemp. One specific form of CBD is approved as a drug in the U.S. for seizure.
Over 80 chemicals, known as cannabinoids, have been found in the Cannabis sativa plant. Delta-9-tetrahydrocannabinol (THC) is the most famous ingredient in cannabis. But CBD is obtained from hemp, a form of the Cannabis sativa plant that only contains small amounts of THC. CBD seems to have effects on some chemicals in the brain, but these are different than the effects of THC.
Laws passed in 2018 made it legal to sell hemp and hemp products in the US. But that doesn't mean that all CBD products made from hemp are legal. Since CBD is an approved prescription drug, it can't be legally included in foods or dietary supplements. CBD can only be included in "cosmetic" products. But there are still CBD products on the market that are labeled as dietary supplements. The amount of CBD contained in these products is not always the same as what is stated on the label.
WebMD. (n.d.). CANNABIDIOL (CBD): Overview, Uses, Side Effects, Precautions, Interactions, Dosing and Reviews. WebMD. https://www.webmd.com/vitamins/ai/ingredientmono-1439/cannabidiol-cbd