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.
16 Apr 2012. Yes, it is fine to be on Nexium long term. A lot of people do take it for long periods of time. Nexium (esomeprazole) belongs to a group of drugs called proton pump inhibitors. Nexium decreases the amount of acid produced in the stomach.