Special Nutritional Support. Medical Food Complete Liquid Nutrition. Vanilla - Artificial Flavor. 475 Calories - Ready to Use/Lactose Free. Novasource ® Renel is a delicious, calorically dense complete liquid formula providing balanced nutrition. A Medical Food with a protein, vitamin and mineral profile specifically formulated for dialysis patients with chronic or acute renal failure or patients requiring electrolyte or fluid restrictions. Please refer to product label for most current ingredient, allergen and nutrition information.