The present invention relates to the use of a combination of a certain DPP-4 inhibitor and an alpha-glucosidase inhibitor for use in therapy, e.g. for use in treating and/or preventing a metabolic disease such as type 2 diabetes mellitus and/or conditions related thereto. The invention also relates to the use of such combination for improving body weight control, reducing body weight, inducing satiety, inhibiting gastric emptying and/or reducing food intake, in a patient in need thereof.