Can Sativex Be Used For Severe Pain Due To MS?

hi i am from IRAN . And i have 30 years old .It is nearly 15 years that ihave MS. In last years i use Avonex in in last year i use Solu medrol but there is very big problem in my feet, ican not so good walking >You are kindly requested to that if, i can use Sativex? and Whats your hint. Last MRI test show that my MS is stopped but also i feel problem.
Besr regards
leila ranjkesh
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