Disclosed is the combination of beta-hydroxy-beta-methylbutryate, arginine, and glutamine for use in a method of treating a diabetic ulcer in a diabetic individual having at least one of: (a) a serum albumin level of less than or equal to 4.0 g/dL, and/or (b) an Ankle-Brachial Index of less than 1.0. 9. Also disclosed is the use of the combination of beta-hydroxy-beta-methylbutryate, arginine, and glutamine for the manufacture of a medicament for use in the treatment of a diabetic ulcer in a diabetic individual having at least one of: (a) a serum albumin level of less than or equal to 4.0 g/dL, and/or (b) an Ankle-Brachial Index of less than 1.0. In certain embodiments, the combination of beta-hydroxy-beta-methylbutyrate, arginine, and glutamine are orally administered via a nutritional composition.