Quest Diagnostics’ Barry Sample toldConsumer Reports the urine test most commonly used for drug tests doesn’t look for CBD; it actually looks for a compound created by the body after THC is metabolized. While CBD products aren’t supposed to contain more than 0.3% THC, some may have more than the label claims. Small amounts of THC from CBD products can also build up over time.

Instead, CBD interacts with the body’s built-in receptor system (the endocannabinoid system, or ECS) to reduce pain response and inflammation, soothe the nervous system, and promote balance within the body. Some pieces of research have connected diet with how efficiently the body is able to use CBD oils and other products. The warning also applied to hemp CBD capsules and oil that were being marketed illegally while not adhering to the federal definition of a dietary supplement.

In October 2018, cannabidiol became legal for recreational and medical use by the federal Cannabis Act. As of August 2019, CBD products in Canada could only be sold by authorized retailers or federally licensed medical companies, limiting their access to the general public. Edible CBD products were scheduled to be permitted for sale in Canada on October 17, 2019, and are to be used only for human consumption. Various strains of "medical marijuana" are found to have a hemp oil significant variation in the ratios of CBD-to-THC and are known to contain other non-psychotropic cannabinoids.

The leaves and flowers of marijuana plants are used to make joints and edibles because they typically contain 15-20% THC. CBD oils are made from the hemp plants, which contain, at most, 0.3% THC.

Any psychoactive marijuana, regardless of its CBD content, is derived from the flower (or bud) of the genus Cannabis. Certain standards are required for legal growing, cultivating, and producing the hemp plant. The Colorado Industrial Hemp Program registers growers of industrial hemp and samples crops to verify that the dry-weight THC concentration does not exceed 0.3%.

Alongside the 80 phytocannabinoids, the oil also contains naturally occurring terpenes, flavonoids, and other valuable hemp compounds that work synergistically to heighten the positive health benefits. The oil comes in four flavor options—Mint Chocolate, Lemon Twist, Orange Blossom, and Olive Oil—which can be a perfect boost in your morning power smoothie or lunchtime salad dressing, or enjoyed on their own. Hemp seed oil, also sometimes called “hemp oil”, is derived from the seeds of the hemp plant only, no phytocannabinoids there. The oil is rich in healthy omega-3 fatty acids, so it can do wonders for your skin, but beyond that it doesn’t have the same benefits as a CBD oil. It’s important to look out for this distinction to make sure you’re getting what you’re actually looking for.

Cannabidiol (CBD), a cannabinoid, is a compound found within the Cannabis genus of plants. Unlike its cousin THC (tetrahydrocannabinol), CBD does not produce the high associated with marijuana use.

Additionally, Idaho, Nebraska, and South Dakota are the only three states as of January 7, 2020 to ban the use of CBD in any form or capacity. The 2014 Farm Bill legalized the sale of "non-viable hemp material" grown within states participating in the Hemp Pilot Program which defined hemp as cannabis containing less than 0.3% of THC. By federal law, private enterprises developing hemp-derived CBD are obligated to cultivate hemp exclusively for industrial purposes, which involve the fiber and seed, but not the flowering tops which contain THC and CBD. Hemp CBD products may not be sold into general commerce, but rather are allowed only for research. The 2018 Farm Bill requires that research and development of CBD for a therapeutic purpose would have to be conducted under notification and reporting to the FDA.

CBD does not appear to have any psychotropic ("high") effects such as those caused by ∆9-THC in marijuana, but is under preliminary research for its possible anti-anxiety and anti-psychotic effects. Similar to energy drinks and protein bars which may contain vitamin or herbal additives, food and beverage items can be infused with CBD as an alternative means of ingesting the substance. In the United States, numerous products are marketed as containing CBD, but in reality contain little or none. In February 2019, the New York City Department of Health announced plans to fine restaurants that sell food or drinks containing CBD, beginning in October 2019.