"The brains of Alzheimer's patients don't convert glucose into energy as efficiently as healthy brains, which can result in a decrease in cognitive function, according to Accera Inc., the Broomfield, Colo., company that sells the milkshake, called Axona. The shake contains caprylic triglyceride, a compound derived from coconut oil that is metabolized in the liver to produce ketone bodies, which serve as alternate brain fuel for Alzheimer's patients, the company says. Axona, which is available by prescription only, is a 217-calorie packet that should be mixed with any type of liquid using a shaker cup or a blender. Chocolate syrup is a favorite, says John Richard, a Lexington, Ky., family physician who has prescribed it to 30 patients and says most have had good results. Axona can be used either on its own or with Alzheimer's drugs, the company says."