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ATC Group: A02AA04 Magnesium hydroxide

Anatomical Therapeutic Chemical Classification System

Hierarchical Position

Level
Code
Title
1
A
Alimentary tract and metabolism
2
A02
Drugs for acid related disorders
3
A02A
Antacids
4
A02AA
Magnesium compounds
5
A02AA04
Magnesium hydroxide

Active Ingredients

Chemical substance
Description
Magnesium hydroxide

Magnesium hydroxide is practically insoluble in water and solution is not effected until the hydroxide reacts with hydrochloric acid in the stomach to form magnesium chloride. Its neutralising action is almost equal to that of sodium bicarbonate. When the dose is in excess of that required to neutralise the acid the intragastric pH may reach pH 8 or 9. Acid rebound following magnesium hydroxide is clinically insignificant. Magnesium hydroxide has an indirect cathartic effect resulting from water retention in the intestinal lumen.

Monographs

Monograph
Type
Country
MILK OF MAGNESIA Oral Suspension
MPI, EU: SmPC
UK