Bells Sodium Bicarbonate For use as an antacid, for the relief of indigestion. Ingredients Powder Sodium Bicarbonate Directions For oral administration. water three to four times a day. Elderly: There is no need for dosage reduction in the elderly. Warnings Sodium bicarbonate should be used with caution by patients on low sodium diets or with congestive heart failure, hypertension, impaired renal function and cirrhosis of the liver. Do not exceed the recommended dose as excess or prolonged use may lead to alkalosis.?