Cannabis as a Complementary Treatment in Multiple Sclerosis

"Eligibility, Screening and Baseline (T0):~Candidates will be seen by both research staff and a neurologist. Full written informed consent will be obtained before completing questionnaires and administering physical and medical evaluations. If eligibility is confirmed, a blood sample will be collected followed by participant randomisation .~Follow-up visits:~Randomized participants come back after 4 weeks (T1) for the same assessments administered at T0. Only participants who had a decrease in their level of spasticity can continue their participation in the same allocated arm for an additional period of 12 weeks.~At the end of the additional period of 12 weeks (T2), another visit is scheduled for a last assessments which are the same as T0 and T1.~Throughout study, courtesy calls will be scheduled and standard care for MS will also be offered to ensure participants 'safety and well-being."