Any medicine that you take non-stop can be injurious to health and the same holds true for taking antacids for a long time. Sodium bicarbonate in the antacid medication can disturb mineral balance in your body, increase kidney malfunction, affect your blood pressure, and even cause urinary tract infection. Antacids also contain calcium carbonate. This can give you constipation and also cause kidney stones. Some antacids can also reduce the amount of calcium in your bones. Hence it is crucial that instead of continuously consuming antacids, you get a timely acid test done and find the root cause of the problem.