The Carb Stack is the perfect trifecta combining Steel Whey, Dextrose (high glycemic), and Carb10 (low glycemic) so you can effectively manage your carbohydrate intake via supplementation. Steel Whey can be taken anytime along with the Carb10 (slow digesting carb) for weight gain. Taking Dextrose with Steel Whey post workout will help replenish muscle glycogen and boost insulin levels. ... The extra insulin actually helps your body to more efficiently utilize the amino acids from the protein, so you rebuild and repair your muscles more quickly.