When CBD is referred to as full spectrum or whole plant CBD, it means that the CBD contains all other cannabinoids found in the marijuana plant including CBN (Cannabinol), CBG (Cannabigerol), and THCV (Tetrahydrocannabivarin), to name a few. And yes, along with these cannabinoids, Full Spectrum CBD also contains trace amounts of THC (Tetrahydrocannabinol), but in very low concentrations (up to .3%), resulting in very minimal psychoactive stimulation.
CBD Isolate, on the other hand, is simply purified CBD that has been extracted from the marijuana plant and isolated from the other cannabinoids. So why is this important, and why would a patient choose one over the other?