A study by a team from Children's Hospital Colorado that was presented during the AES Annual Meeting in December 2014 and has recently been accepted for publication in the journal Epilepsy & Behavior, found that artisanal "high CBD" oils resulted in no significant reduction in seizures in the majority of patients and in those for whom the parents reported improvements, these improvements were not associated with improvement in electroencephalograms (EEGs), the gold standard monitoring test for people with epilepsy.

Additionally, in 20% of cases reviewed seizures worsened with use of cannabis and in some patients there were significant adverse events. These are not the stories that you have likely 

heard in your public hearings, but they are the reality of practitioners at Children's Hospital Colorado who have cared for the largest number of cases of children with epilepsy treated with cannabis in the U.S.