Capsules contain CBD, as we know it, in an easy-to-swallow pill similar to a vitamin or candy. So you don't have to choose how much to take when measuring from a dropper, as you might with a bottle of CBD oil. Typically, the capsule itself is often made from gelatin, but there are vegetarian options available. Some brands add ingredients designed to complement and amplify the effects of CBD. One capsule contains approximately 15 mg of CBD from broad spectrum hemp extract. Researchers believe that CBD is beneficial for treating depression because of the positive effect it has on serotonin receptors in the brain. Low serotonin levels are known to be linked to depression, although CBD does not increase serotonin levels. However, it is known to alter the response of brain-based chemical receptors to serotonin that is already present. A review of animal studies administering CBD oil to evaluate its application as an antidepressant and anxiolytic type compound revealed that, overall, CBD...