HCY 2 Non-GMO Category 2 Metabolic Powder, 1860 calories per 1 pound (454 g) can, 22 grams protein equivalent per 100 grams of powder, vanilla scent. HCY 2 is a medical food powder that is free of the essential amino acid methionine for children and adults with documented homocystinuria. The product provides all other essential amino acids as well as nonessential amino acids, carbohydrate, fat, essential fatty acids, vitamins and minerals. Use under direct and continuing supervision of a doctor.