This protein drink for dialysis patients has 475 calories per carton—18% of which come from protein (21.6 grams of protein).. The less a patient can drink (due to fluid restriction), the more important taste becomes: Novasource Renal's strawberry flavor delights.. Novasource Renal is formulated to meet specific recommendations in the ASPEN Clinical Guidelines: Nutrition Support in Acute and Chronic Renal Failure so diabetics can consume Novasource Renal safely..