Well CBD oil is supposed to have little psychoactive effect so is not supposed to be harmful but I have not had enough experience with this. And Information on this is limited. I don't think there is enough information to show benefit too so see why you wish to take it.

CBD is one of many compounds, known as cannabinoids, in the cannabis plant. Researchers have been looking at the potential therapeutic uses of CBD. CBD is not psychoactive. This means that it does not change the state of mind of the person who uses it. However, CBD does appear to produce significant changes in the body, and some research suggests that it has medical benefits. People with chronic anxiety should avoid cannabis, as THC can trigger or amplify feelings of anxiousness and paranoia. However, authors of a review from Neurotherapeutics found that CBD may help to reduce anxiety in people with certain related disorders. This is a study which is still in process so it can be used in control amounts. If you feel any changes or difficulty kindly visit the nearest ER at the earliest.