Biotest Metabolic Drive Protein (2014). Metabolic Drive Protein provides high quality whey isolate and micellar casein in a highly concentrated, great tasting, easy-to-mix shake. We have used it the past couple of years as our go-to protein shake and had great results. It is low in carbs and we typically mix with water in a shaker and even add it to our morning’s regular black coffee. We have also found that it mixes well with plain greek yogurt or oatmeal for a great breakfast or tasty snack. It is available online at $35.95 for a 2 lb container. Serving size is a 30 gram scoop with each container yielding about 31 scoops. The protein is available in chocolate, vanilla, banana, and strawberry flavors. Learn more at T-Nation.com.