Administration of ubidecarenone is effective for the therapy of sleep apnea. It is given at a dose of 1-3,000 mg per day in adults. It is especially effective to administer ubidecarenone to the patient before bed at a dose of 2-50 mg.

Vitamin E acts to enhance and improve the effect upon oral administration of coronary active vasodilators and/or blood circulation-promoters. The new use and new agents containing vitamin E are described.

A nonalcoholic beverage such as table water, mineral water or the like is described. In order to develop a well-tolerated composition which can be administered easily and which permits the body to be supplied almost incidentally with a desirable dose of ubiquinone Q 10, it is provided that it comprises 10 mg/l to 500 mg/l of ubiquinone Q 10. A production process envisages dissolving ubiquinone Q 10 in a solubilizer, and adding the solution to the beverage.

A W/O skin cream preparation for external use useful as a remedy for skin diseases which consists of a cream base comprising a diglycerol fatty acid ester and/or a sorbitan fatty acid ester having an HLB value of from 3 to 7, a polyvalent metal salt of a saturated or unsaturated fatty acid having 10 to 22 carbon atoms, an inorganic or organic acid salt, an oily phase component, and water together with an active ingredient.

The present invention relates to an encapsulated unsaturated fatty acid substance in a form of a three-layered capsule, comprising an unsaturated fatty acid or a derivative thereof (11) as a content and a coating layer (10) mainly containing gelatin, encapsulating the content (11), wherein a water-soluble gel layer (12) containing an acid or an acid salt thereof is present between the coating layer (10) and the content (11). The encapsulated unsaturated fatty acid substance of the present invention is characterized by that it has neither insolubility nor deterioration with time, and that it is enteric.