Dextrose Intravenous (IV) fluid is a mixture of dextrose (glucose) and water. The Dextrose IV fluid is used to treat low blood sugar. The solution is also used in the treatment of high blood potassium, diabetic ketoacidosis, and as part of parenteral nutrition. The Dextrose Intravenous (IV) is given by injection into a vein of the patient. Online Dextrose intravenous concentration calculator to do dextrose calculation to find the dextrose IV target concentration.