First off, you need to know that there is a difference between CBD oil and CBD extracts. A lot of people are confused because it is the same thing. The difference is that the CBD extract is extracted from the cannabis plant (the botanical source) whereas the CBD oil is extracted from the hemp plant (found in the hemp plant family).
The CBD oil can only be purchased in the United States. The amount of CBD that is taken out by the consumer is one and a half percent of what is actually in the capsule. It will not cause you any side effects. There are a few companies that have made the mistake of putting CBD on the label as CBD oil and trying to sell it at a higher price.
This cannabinoid content is far more concentrated than other types of marijuana. The only cannabinoid in CBD that is actually ingested is the delta-9-tetrahydrocannabinol, or THC. Most CBD products contain other cannabinoids like cannabidiol (CBD) and cannabigerol (CBG). Both CBG and CBD are very similar to THC. If you consume both of them, your body will release a very small amount of THC. This means that you do not get any of the therapeutic benefits of both cannabinoids. CBD is a very powerful compound so you really need to know what you are consuming.