These two medications are commonly used to treat heartburn. Nexium is also known as esomeprazole and this can be used to treat heartburn. It will give immediate results. Zantac is known to be ranitidine. This comes with fewer side effects as compared to Nexium but it may not be used by some people especially if they are taking other drugs for other conditions.
While they can both treat heartburn, take note that Nexium is an inhibitor of the proton pump while Zantac is known as an H2 blocker. There are a lot of people who become extremely uncomfortable when they are experiencing heartburn. This is not considered to be serious but it can be very irritating to have. It can also stop you from doing your different tasks and activities.