Advertisement
Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy
CALCIUM CARBONATE; SIMETHICONE (KAL see um KAR bon ate; sye METH i kone) treats occasional heartburn, indigestion, upset stomach, or other conditions caused by too much stomach acid. It works by reducing the amount of acid in the stomach. It may also be used to treat symptoms of gas, such as fullness, pressure, and bloating. It works by making it easier to pass gas through your digestive tract and exit your body. It belongs to a group of medications called antacids.
Advertisement
Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
COMMON BRAND NAME(S): Alka-Seltzer Heartburn + Gas, Gas-X with Maalox, Maalox Advanced, Maalox Max, Maalox Max Plus Antigas, MYLICON Children's, Phazyme Gas & Acid, Rolaids Plus Gas Relief, Titralac Plus, Tums Antacid/Antigas
They need to know if you have any of these conditions:
Take this medication by mouth. Take it as directed on the label. Chew it completely before swallowing. Do not use it more often than directed.
Talk to your care team about the use of this medication in children. While this medication may be given to children as young as 2 years for selected conditions, precautions do apply.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
This does not apply. This medication is not for regular use. It should only be used as needed.
Advertisement
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
Tell your care team if your symptoms do not start to get better or if they get worse. Do not use this product for more than 2 weeks without advice from your care team.
Side effects that you should report to your care team as soon as possible:
Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Keep out of the reach of children and pets.
Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Protect from moisture. Keep the container tightly closed. Get rid of any unused medication after the expiration date.
To get rid of medications that are no longer needed or have expired:
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
Advertisement
Advertisement
Copyright ©2025 Elsevier Inc. All Rights Reserved.
Note: Introduction and Additional Common Questions written and medically approved by Cleveland Clinic professionals.