Sativex is an (mouth) spray developed by the UK company for multiple sclerosis patients, who can use it to alleviate neuropathic pain  and spasticity.  Sativex is  derived from botanical material.  Its principal active cannabinoid components are the cannabinoids: tetrahydrocannabinol(THC) and cannabidiol (CBD). The product is formulated as an  spray which is administered by spraying into the mouth. http://en.wikipedia.org/wiki/Sativex