Major news: It was announced today that Sativex, a cannabinoid-based liquid medicine sprayed under the tongue, has been approved for use in Great Britain to help treat the muscle spasticity suffered by multiple sclerosis patients. Sativex is a natural marijuana extract that is produced by British-based GW Pharmaceuticals. It has been approved for use in Canada to treat neuropathic pain since 2005. “Once again, the scientific community has confirmed that marijuana is medicine and it can provide safe…