Being as each person is unique and I am not aware of your detailed health history, I am unable to provide any specific medical recommendations to you. Please discuss this with your Dr. He/she may be able to refer you out to a local RD who can assess your diet and provide specific suggestions to help you get all the nutrition you need and ways to include NutriBlasting.
In general re: dehydration...(from UOAA)
Balance intake of fluids with the output from the stoma. Water is an excellent natural beverage; however, over-consumption of water can wash away electrolytes in the body. Drink a combination of water and electrolyte beverages. The glucose ingredients in electrolyte drinks aid in absorption of electrolytes.