Looks like the link you provided is a study on medical marijuana for EF. CBD oil is not the same — it’s doesn’t have the THC that marijuana has (it’s hemp). CBD oil is legal in all states in the US. Medical marijuana is only legal in a few states and now in Canada too.
ADDitude Community Moderator, Parenting ADHD Trainer & Author, Mom to teen w/ ADHD, LDs, and autism