The present invention relates to the use of a short-acting oral hypoglycemic agent and to a novel regimen in the treatment of type 2 diabetes in which the endogenous secretion of insulin is stimulated in connection with meals by administering in connection with the meals a short-acting oral hypoglycaemic agent. Also, the present invention relates to a method of achieving significantly improvement in the glycaemic control by a combined use of repaglinide and metformin in NIDDM patients poorly controlled on metformin alone.