If you experience any side effect, contact a medical professional right away. Nexium is the brand name for the drug esomeprazole, and it's been conceived especially to deal with these sorts of issues. cheap esomeprazole It acts directly on the acid levels inside your body to regulate the process, and prevent a lot of the symptoms that you can get by having some of those diseases or causes. Some of the side effects of Nexium include dizziness, uneven heart rates, and seizures.