Does GW Pharmaceuticals does have a drug made from CBD Oil for the treatment of Severe Epilepsy in children in Phase 2 or phase 3 Trials? GWPRF Any comments. The last I heard it passed phase 2 trials with flying colors. EPIDIOLEX: http://www.ucsf.edu/news/2014/02/111641/marijuana-derived-epilepsy-drug-clinical-trial-children-uncontrolled-seizures