Get Chewable Extra Strength Antacids for Adults and Children 12+ in Delicious Fruit Flavors If you are experiencing heartburn symptoms then use TUMS for Heartburn an extra-strength antacid that comes in chewable tablets. These extra strength antacids start help alleviate your heartburn symptoms fast as they neutralize acid on contact. Plus these extra strength TUMS for Heartburn 96 count come with 50% more acid fighting power per tablet than regular TUMS antacid tablets. How long TUMS lasts will vary from user to user as well as the person?s exposure to heartburn triggers. When symptoms occur chew and swallow two to four extra strength antacid tablets depending on the severity of your acid indigestion. Make sure to read the instructions and product label before use to ensure you take the appropriate amount. Do not exceed the individual dose or total daily dose recommendation which is more than 10 tablets in 24 hours. Do not take TUMS for Heartburn if your symptoms continue for longer than 2 weeks