A blood substitute (also called artificial blood or blood surrogates) is a substance used to mimic and fulfill some functions of biological blood.It aims to provide an alternative to blood transfusion, which is transferring blood or blood-based products from one person into another. blood substitute (also called artificial blood or blood surrogates) is a substance used to mimic and fulfill some functions of biological blood.
Over-the-counter Nexium is FDA approved for treatment of frequent heartburn, which is heartburn that occurs two or more days a week. Prescription Nexium is designed to reduce the amount of acid in a personâs stomach, effectively treating GERD, acid reflux disease and symptoms of heartburn.
NEXIUM may help your acid-related symptoms, but you could still have serious stomach problems. Talk with your doctor. NEXIUM can cause serious side effects, including: 1  Diarrhea. 2  NEXIUM may increase your risk of getting severe diarrhea. 3  This diarrhea may be caused by an infection (Clostridium difficile) in your intestines.