Powerful Heartburn Medicine for Adults and Children 12+ TUMS Ultra Strength Chewable Antacid Tablets go to work in seconds by starting to neutralize acid on contact to bring fast and powerful ultra strength heartburn relief, with double the acid fighting power per tablet as TUMS Regular Strength. When symptoms occur, chew and swallow two to three ultra strength tablets, depending on the severity of your acid indigestion. Featuring the active ingredient calcium carbonate, these chewable antacids relieve heartburn, sour stomach, acid indigestion and provide upset stomach relief associated with these symptoms. Delicious and fast, these TUMS Assorted Fruit antacid tablets include a variety of tasty flavors. TUMS antacid tablets are the #1 recommended adult antacid brand by doctors, pharmacists and OBGYNs. As America’s #1 antacid and trusted as a heartburn and acid indigestion medicine for 90 years, TUMS is fully supported with a satisfaction guarantee. These ultra strength antacid tablets are packaged in a compact, resealable bottle that's convenient to keep in your car or office for whenever heartburn strikes. Choose these 1000 mg antacid tablets to fight flare ups fast, at home or on the go.