Calcium Carbonate, Magnesium Hydroxide, and Simethicone

Common Brands Tums, Caltrate, Os-Cal/ Milk of Magnesia, Phillips' Milk of Magnesia/ Gas-X, Mylanta Gas, Phazyme
Drug Class
Antacid, Calcium Supplement/ Antacid, Laxative/ Antiflatulent
Controlled Substance Classification
Not a controlled medication
Generic Status
Lower-cost generic available
Availability
Over-the-counter (OTC)
Hope Chang, PharmD, AAHIVP
Hope Chang, PharmD, AAHIVP
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Medically reviewed by Hope Chang, PharmD, AAHIVP last update on 20/12/2023

Overview

Calcium carbonate, magnesium hydroxide, and simethicone are the most popular agents in the medical industry for the treatment of gastrointestinal conditions. These active ingredients are often found in many over-the-counter drugs and are commonly included in antacids, laxatives, and anti-gas medications. Together, they help remedy such common stomach upsets as acid reflux, constipation, bloating, and indigestion.

 

Knowing how each of these works, their uses, side effects, and the right dosages can help in safe and effective usage.

DRUG STATUS

Availability

Prescription only

Pregnancy & Lactation

Pregnancy