Usually Vitargo and gatorade but my Vitargo isn't in yet till tom. so I've been using the carb powder by Cytosport(makers of muscle milk) mixed with gatorade. If you choose to use gatorade, buy the powder, SOOOO much cheaper and easier to use. 8and20 is right, waxy maize is some badass shit but the only one that doesn't upset my stomach is Vitargo GCL