The purpose of the study is to determine which of the commonly used commercial nutritional supplements are preferential for patients with Diabetes Mellitus (DM). We will compare the post-prandial blood glucose (BG) responses in response to 3 different nutritional supplements each containing 50 grams of carbohydrate in adult patients with type 2 diabetes mellitus and relate these responses to one of the two well-recognized indices of insulin sensitivity - HOMA-R and QUICKI.