IV Fluid A sterile liquid preparation infused into a vein. IV fluid is prescribed as a replacement of fluid, electrolytes, calories, vitamins, and other nutritional substances. In addition, IV fluids are used to administer blood products and medications such as chemotherapy. Examples of IV fluids include Normal Saline, Ringers Solution, and Lactated Ringers Solution. (NCI) IV Fluid Intravenous Fluid medication material