Renastart 400g Can, 1908 Calorie Per Can. Formulated to Meet the Nutritional Needs For Pediatric Renal Disease. Renastart Formula is a High Energy Powder With Low Levels of Protein, Calcium, Chloride, Potassium, Phosphorous and Vitamin A. Renastart Formula Also Contains Carbohydrate, Fat, Additional Vitamins and Trace Elements, as Well as the Long-Chain Polyunsaturated Fatty Acids (LCP's), Arachidonic Acid (AA) and Docohexaenoic Acid (DHA).