For temporary relief from acidity and gas, generic medications like Pantoprazole or Omeprazole can help reduce stomach acid, while antacids can soothe immediate discomfort. However, because you have gallbladder stones, these symptoms might be linked to your gallbladder rather than simple indigestion. While a medication called Ursodeoxycholic acid is sometimes prescribed to help dissolve certain types of stones, it requires a doctor's evaluation. I highly recommend consulting a healthcare professional or gastroenterologist for a proper diagnosis. They can determine if you need specific medication or a definitive treatment. Meanwhile, try eating smaller, low-fat meals to avoid triggering gallbladder pain.