That heartburn is about to get schooled by professor peppermint. Tums regular strength peppermint 3-roll packs of 12 chewable tablets work hard to soothe heartburn which is why tums is the #1 selling antacid tablet in canada. The tried-and-true formula has been a favourite for more than 80 years because people know they can count on tums for fast relief of their heartburn, acid indigestion, and sour stomach caused by excess stomach acidity.maximum daily dose: adults: 16 tablets. Pregnant women: 10 tablets. Medicinal ingredient: 500 mg calcium carbonate/tablet.