According to results from the AAN, strong evidence supports the efficacy of pure CBD pills (ie, OCEs) in providing short-term relief of spasticity symptoms in multiple sclerosis. Evidence for THC pills and nabiximols providing short-term relief is moderate. There is also moderate evidence that THC pills and nabiximols reduce cramplike pain or painful spasms. CBD is now also available in transdermal form.
The results also indicate that OCE pills probably do not alleviate levodopa-induced dyskinesias (moderate evidence). Evidence to show the efficacy of any form of cannabis in reducing the frequency of epileptic seizures was insufficient, and not enough evidence supports that synthetic THC pills alleviate Huntington disease motor symptoms, Tourette syndrome tic severity, and cervical dystonia abnormal neck movements.
Overall, the risk for serious psychopathologic effects was about 1%.
For more information on the use of marijuana, read here.
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Cite this: Sage W Wiener, Michael E Schatman. Fast Five Quiz: Marijuana--Medical Uses and Personal Abuses - Medscape - May 24, 2017.