Contrary to popular beliefs CBD is sold as a natural supplement rather than medication. Currently FDA does not regulate the purity, safety or quality of dietary supplements, in addition, the product may contain other chemicals that you would not want to be exposed to, so you have to be very careful when selecting the provider or product.
Taken in large amounts CBD may have side effects like: fatigue, irritability and even nausea, also it can increase the level of the blood thinner coumadin in your blood. CBD can increase the effectiveness of other medications in your blood – exactly the same mechanism hat grapefruit juice does.
The bottom line is: but CBD in a trusted, tested, verified source and try not to mix with other medications that may impact your wellbeing. Ideally consult the doctor if you have any side effects.