Magnesium carbonate

Magnesium carbonate Uses, Dosage, Side Effects, Food Interaction and all others data.

Magnesium carbonate, also known as magnesite, is a common over the counter remedy for heartburn and upset stomach caused by overproduction of acid in the stomach .

Neutralizes acid in the stomach .

Trade Name Magnesium carbonate
Generic Magnesium carbonate
Magnesium carbonate Other Names Magnesio carbonato
Formula CMgO3
Weight Average: 84.314
Monoisotopic: 83.969785764
Protein binding

30% of magnesium is bound to proteins .

Groups Approved, Investigational
Therapeutic Class
Available Country
Last Updated: September 19, 2023 at 7:00 am
Magnesium carbonate
Magnesium carbonate


Magnesium carbonate is an antacid used for symptomatic relief of heartburn, indigestion, and upset stomach.

Used as an over the counter antacid .

Magnesium carbonate is also used to associated treatment for these conditions: Acid indigestion, Bladder calculus, Heartburn, Kidney Stones, Upset stomach, Catheter irrigation

How Magnesium carbonate works

Magnesium carbonate reacts with hydrochloric acid in the stomach to form carbon dioxide and magnesium chloride thus neutralizing excess acid in the stomach .


During overdose, magnesium impairs neuromuscular transmission resulting in weakness and hypoflexia .

Food Interaction

No interactions found.

Volume of Distribution

Vd for magnesium is 0.2-0.4L/kg . About 50% distributes to bone.

Elimination Route

About 40-60% of magnesium is absorbed following oral administration . Percent absorption decreases as dose increases.

Half Life

Half life of 27.7 hours reported with overdose of 400mEq of magnesium in an adult .


Maximum magnesium clearance is directly proportional to creatinine clearance .

Elimination Route

Primarily eliminated in urine .

Innovators Monograph

You find simplified version here Magnesium carbonate

*** Taking medicines without doctor's advice can cause long-term problems.