Pan 40 tablet is used to treat stomach ulcers, gastroesophageal reflux disease, heartburn, and oesophagus inflammation-related conditions. It works by reducing stomach acid production by blocking or inhibiting a pump called the proton pump, which is responsible for stomach acid secretion. This helps relieve acidity, promote the healing of ulcers, and reduce acid reflux. For best results, take Pan 40 tablet on an empty stomach.