The Benefits of Sublinguals The sublingual form absorbs directly into the bloodstream, via the blood vessels under the tongue and in the cheeks, allowing for quick entry into the system. Coenzyme Q10 is essential to human life and is found in most cells within the body. As people age, or experience environmental stresses, their cells' ability to produce conenxyme Q10 diminishes. Taking Coenzyme Q10 as a dietary supplement may aid in maintaining youthful levels of this vital substance. It plays a role in the electron transport chain, one of the body's energy-producing cycles that converts food into energy. Research indicates that supplementation with this nutrient may support normal heart function and provide antioxidant protection.