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Cannabis Extract Helps Relieve Stiffness, Pain Associated With Multiple Sclerosis

October 8, 2012: 12:00 AM EST
A phase 3 clinical trial involving 22 medical centers in the U.K. has found that cannabis extract (tetrahydrocannabinol) eases the painful muscle stiffness associated with multiple sclerosis (MS). Patients took either gradually increasing doses of cannabis extract (up to 25 mg) or a placebo for two weeks, followed by 10 weeks at the maintenance dose. Researchers said that at the end of the study, relief from muscle stiffness was twice as high among the cannabis extract group as the placebo group. Muscle stiffness was alleviated in 30 percent of those given cannabis compared with 16 percent of those treated with the placebo.
J. P. Zajicek et al., "Multiple Sclerosis and Extract of Cannabis: Results of the MUSEC Trial", Journal of Neurology, Neurosurgery & Psychiatry, October 08, 2012, © BMJ Publishing Group Ltd.
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