An over-the-counter antacid is often used to relieve mild cases of heartburn or acid reflux. Though they are available without a doctor’s prescription, they should be taken only under a doctor’s advice. As per American Academy of Family Physicians:

  • There are different types of antacids, which work in different ways.
  • Always consult your doctor before taking an antacid.
  • To manage an ulcer, an antacid may need to be taken along with an antibiotic.
  • If one needs more calcium to help strengthen bones, one should take an antacid that contains calcium carbonate.
  • Antacids may have minor side effects such as nausea, headache, diarrhea or constipation in some patients.
  • Read the label carefully to make sure that one is not allergic to any of the ingredients.
  • People with kidney disease may not be able to take all sorts of antacids.
  • An antacid may interact with other medications.