Basil leaves also help in relieving heartburn, as well as combating nausea and gas. Drink it twice a day for faster relief. Specifically, it occurs in the esophagus. It usually occurs after eating a meal. These are generally those foods that are high in acid such as citrus fruits and spicy foods. Avoid bedtime snacks. Bananas can be categorized as natural antacids as they Otc treatments for heartburn the effect of your acid reflux. Products like Pepcid AC® are called histamine H2 blockers, or acid blockers. This allows gastric Otc treatments for heartburn to seep back up your gullet, causing a burning sensation.