Nexium is a medication used for treating the symptoms of acid reflux
. It is a prescription drug generally prescribed for 4 to 8 weeks. Patients who are suffering from gastric ulcers can also use this drug. Some possible side effects of this drugs are breathing problems, swelling on the tongue and lips and allergic reactions. You need to take it before an hour of taking a meal with a full glass of water. Take this medication on a regular basis if you wish to see good results.