Skip to Main Content
Ontario Poison Centre




Antacids are used to treat acid reflux, heartburn and indigestion, and come in liquid, effervescent tablet, gummy and tablet form. Ingredients often include calcium carbonate, such as in Tums.

Children often eat antacids because they like the taste.

Poisoning Risk

Low in small amounts.

A one-time ingestion of antacids is rarely a problem.

Expected Symptoms

  • Possible upset stomach (discomfort, nausea, isolated episode of vomiting or diarrhea).

Home Treatment

  • Provide something to drink for dilution.
  • Call the Poison Centre for further advice.

*Note: If your child has kidney problems, antacids may pose a larger risk to them.


  • This product should be locked up and out of sight with all of your other household medicines.
  • Always keep this product in its original container.
  • Every case is different. OPC is available 24hrs/day to provide information for your individual situation. Call 1-800-268-9017 (Toll-free) or 416-813-5900 (Local).



Back to Top