Calcium Carbonate / Magnesium Trisilicate
Calcium Carbonate/Magnesium Trisilicate is a combination antacid medication used to neutralize stomach acid and provide relief from digestive discomfort. This medication combines two active ingredients that work together to balance the therapeutic effects and minimize side effects commonly associated with single-ingredient antacids.
A combination antacid that neutralizes stomach acid to relieve heartburn, indigestion, and related symptoms.
Key facts at a glance
- RxNorm
- 1008921
- Generic
- Calcium Carbonate / Magnesium Trisilicate
- Class
- multi-ingredient
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
This medication is used to treat symptoms of excess stomach acid including heartburn, acid indigestion, sour stomach, and gastroesophageal reflux. It provides rapid relief from symptoms caused by overeating, spicy foods, caffeine, or alcohol.
Calcium carbonate acts as a fast-acting acid neutralizer, quickly raising the pH of stomach contents. Magnesium trisilicate works more slowly but provides a protective coating on the stomach lining. Together, these ingredients complement each other while the magnesium component helps counteract potential constipation caused by the calcium.
This medication may interfere with absorption of certain prescription medications including antibiotics and iron supplements. It should not be used by individuals with kidney problems without medical supervision. Prolonged use or use at high doses should be avoided unless directed by a healthcare provider.
Official drug label
WellAlly may earn a referral fee from linked resources at no extra cost to you. Editorial content is never influenced by commercial relationships.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 28, 2026. · Read our editorial policy