PROBLEM TO BE SOLVED: To provide methods of control and prophylaxis of inflammation and mitigation of inflammatory conditions, particularly arthritis and joint pain, in companion animals, e.g., dogs or cats.SOLUTION: A dietary treatment method for control, mitigation or prophylaxis of inflammation comprises administering to a subject animal a diet comprising 10-10,000 ppm of lipoic acid for a period of at least two weeks. The diet comprises at least 500 IU/kg of Vitamin E, at least 200 ppm of carnitine, and at least 50 ppm of lipoic acid. The lipoic acid is R- (+)-lipoic acid (RLA) or a racemic mixture R/S-lipoic acid (R/S-LA), in a free or nutritionally acceptable salt or ester form.COPYRIGHT: (C)2015,JPO&INPIT【課題】愛玩動物、例えばイヌ又はネコの炎症を抑制及び予防し、炎症状態、特に関節炎及び関節痛を緩和する方法の提供。【解決手段】10~10,000ppmのリポ酸を含む食餌を、少なくとも2週間の期間与え、食餌が、少なくとも500IU/kgのビタミンE、少なくとも200ppmのカルニチン、及び少なくとも50ppmのリポ酸を含むもので、リポ酸が、遊離形態又は栄養素として許容できる塩若しくはエステルの形態のR-(+)-リポ酸(RLA)又はラセミ混合物R/S-リポ酸(R/S-LA)であるものを含む食物を対象動物に与える、炎症の抑制、緩和、又は予防のための食餌療法。【選択図】なし