While THC the phsychotropic ( euphoric) constituent of cannabis, connects with the receptorsin the nervous system , Cannabidiol ( CBD) connects with the receptors in the muscle tissues and the immune system. Cannabidiol (CBD) is the most widely studied pain relieving constituent in the cannabis plant.Found both in the leaf and flower, CBD uniquely fills receptor sites throughout the body. CBD is also thought to "modulate" the effect of THC, reducing the anxiety and paranoia sometimes experienced by some patients. Certain strains of cannabis produce unusual high CBD content, up to 200 times the amount found in most strains. The pain-relieving benefit can be concentrated into easy-to swallow capsules.