If you browse the CBD shelf at your local pharmacy or dispensary, you will notice that the gummies come in many different concentrations. Most contain 10 mg, 20 mg, or maybe 50 mg of CBD. These are the gummies most people buy and use on a regular basis. But then, you'll probably see a few bottles of high-potency CBD gummy bottles that contain as much as 300 mg of CBD. This can seem like a lot of CBD if you're used to the smaller doses, but in fact, there are plenty of situations in which a high-potency CBD gummy can be useful.