Antacids are a very effective way to help relieve acid reflux symptoms. If you take them 1 hour after meals they neutralize the acid in your stomach making it less likely for acid to reflux into the esophagus.
Histamine-2 receptor blockers are also available over the counter. This medication prevents acid production. These must be taken at least 1 hour before meals since they can only prevent acid from being produced, not eliminate it if it already exists.