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Bioavailability refers to the extent and rate at which a substance, such as CBD or THC, is absorbed into the bloodstream and becomes available for use by the body’s tissues or organs. In simpler terms, it measures how much of a substance reaches its target site of action and how quickly it gets there.

For example, when consuming CBD oil orally, not all active ingredients get absorbed into the bloodstream. Factors such as the person’s food intake, product formulation, route of administration, and interactions with other substances in the body can affect its bioavailability.

There are several methods by which substances can be administered to the body, each with its unique level of bioavailability. Common routes of CBD administration include oral (swallowing), sublingual (under the tongue), inhalation (smoking or vaporizing), and transdermal (absorption through the skin).