Cannabinoids
Two compounds that occur naturally in the marijuana plant, Cannabis sativa, are being used in medicine today. One is tetrahydrocannabinol (THC), which causes changes in brain function, perception, and mood (the "high" associated with the drug). The other is cannabidiol (CBD), which does not have psychoactive effects.
Researchers have studied cannabis as a treatment for a range of diseases and conditions, as well as in a variety of forms. THC and CBD have also been tested individually and together, and synthetic forms of THC have been developed and tested as well.
In June 2018, the U.S. Food and Drug Administration (FDA) approved a drug called Epidiolox (cannabidiol), which comes as a liquid solution that's taken by mouth, to treat two severe seizure disorders; it has not been researched for MS, however.
Benefits for MS
The AAN established that oral cannabis extract (OCE) is effective for reducing symptoms of spasticity and easing pain.1 British researchers looking at Sativex (nabiximol), a drug that combines THC and CBD in the form of a mouth spray that's available only in the United Kingdom, found that subjects who received nabiximol had significantly more improvement in spasticity, spasm frequency, and sleep disruptions.
verywellhealth.com/cam-for-...
Moderation note: This is very interesting news for all sufferers of MS. This is a really good post, very carefully worded, passing on only scientifically researched information, but, just because there is so much misunderstanding about cannabis use in medicine, I'd like to reiterate that you are referring to cannabinoids which are extracted from the plant for medical use, and not the plant itself.