CBD isolate is the purest form of CBD, and it’s exactly what it sounds like CBD that is isolated from other parts of the cannabis plant. It’s extracted from the plant with no other compounds or cannabinoids. That means there are no terpenes or essential oils in it. It also contains no THC, so it does not cause psychoactive side effects, and it should not show up on a drug test. It’s simply pure CBD. Of course, it’s important to remember that it also means that you do not get the full benefits of the essential oils that are part of broad-spectrum or full-spectrum CBD.