Not Medical Advice: Tums antacid starts working in seconds, because it dissolves quickly to neutralize stomach acid. It will work longer if you take it with food in your stomach.
It works by neutralizing acid in the stomach. Tums also works to treat or prevent calcium deficiency by providing extra calcium to the body.
Find patient medical information for Tums oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.