Cannabis was used as an analgesic from 2900 BC. According to scientific research, the analgesic effect mainly deals with the ingredient CDB (Cannabinoid) and some other components. In the human body there is a special system called endocannabinoid system that regulates and controls sleep, appetite and the immune system. The cannabinoids naturally secretes in the body and reacts with the nervous system. By acting with a cannabinoid receptor, CBD can reduce inflammation and chronic pain.
Experimental results on rats showed that rats injected with CBD did not respond as much wound pain. In another experiment, sciatica and inflammation in CBD-treated rats were significantly reduced. In a group of clinical studies of 47 patients with multiple sclerosis, patients who took CBD drugs for one month and very significant improvements in pain, walking ability, and muscle spasms.
In another study of 58 patients with rheumatoid arthritis, patients taking CBD had significantly reduced pain during exercise and rest, and their sleep quality had improved significantly. CBD also has an effect on difficult-to-treat myofibril pain. Clinical studies of 20 chronic patients afflicted with myofiber fibromyalgia have shown that patients taking CBD have a 30 % reduction in pain.