A method and composition are presented for enhancing the dissolution and bioavailable properties of CoQ10 nutritional supplements and/or therapeutic agents for a human being and other mammals. The method includes preparing an anhydrous self-microemulsifying base composition by combining: CoQ10, a water-immiscible, and a non-ionic surfactant, containing polyethylene glycol. For an orally administered CoQ10 nutritional supplement in a capsule formulation, a unit dosage from the composition is added to a dissolvable capsule, preferably a soft gelatin capsule, in order to form the nutritional supplement. When a capsule containing the self-microemulsifying composition enters the digestive tract, the temperature of the body's digestive juices warms the composition, causing any of the CoQ10 that may have re-crystallized out of the composition to become re-dissolved into the composition before the capsule dissolves. The re-dissolution of CoQ10 is bioavailable when the capsule dissolves. Upon dissolution of the capsule, the self-microemulsifying composition comes into contact with the digestive juices and naturally forms micellar-type bioavaible microemulsions, consisting of micelles containing CoQ10. In addition to the capsule formulation, the invention includes parenteral, liquid, topical and ophthalmic formulations.
