"Cannabidiol (CBD) has been used as a safe natural remedy for centuries due to its anti-spasmodic, anti-inflammatory and anti-oxidative properties. Importantly, CBD does not have any psychoactive side effects"
CBD is a compound extracted from the flower of the Cannabis Sativa L. plant. Concerns over CBD arise from the confusion between Cannabis, Hemp and Marijuana. Hemp and Marijuana are both species of Cannabis, however Marijuana is bred to have high levels of THC- the substance associated with illegal highs. CBD is extracted from Hemp that contains less than 0.2% THC. This level is considered negligible and cannot produce a 'high'.
Cannabis oil is the umbrella term and Hemp oil and CBD oil are similar terms to describe the same thing. Due to legal status of Cannabis in the UK you will not legally find Cannabis oil with more than 0.2% THC.