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.
How Nexium Harms the Kidneys. Nexium is a proton pump inhibitor, and prevents the stomach from overproduction of acid. It turns off some of the acid producing pumps in the stomach while leaving others to operate normally. Less creation of acid means no more heartburn and its related damage to the esophagus.