Calcium Carbonate

Common Brands Tums, Pepto Kids
Drug Class
Antacid
Controlled Substance Classification
Not a controlled medication
Generic Status
Lower-cost generic available
Availability
Over-the-counter
Kristianne Hannemann, PharmD
Kristianne Hannemann, PharmD
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Medically reviewed by Kristianne Hannemann, PharmD last update on 20/12/2023

Overview

Calcium carbonate is a white odorless powder or crystalline form of naturally occurring sedimentary rock. It is composed of calcium, carbon, and oxygen, making it one of the most important sources of calcium in dietary supplements. It is insoluble in water but can dissolve in acids. That is why it is often used as an antacid for treating acid reflux, heartburn, and indigestion.

 

Calcium carbonate is used in the production of cement, lime, and in many manufacturing processes. In supplement form, it serves as a bioavailable source of calcium, which plays an important role in bone strength, muscle function, and overall health.

DRUG STATUS

Availability

Prescription only

Pregnancy & Lactation

Pregnancy