ATC Group: A02AA04 Magnesium hydroxide

Anatomical Therapeutic Chemical Classification System

Hierarchical position in ATC classification

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

Active ingredients

Active Ingredient
Description

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.

Medicines in this ATC group

Drug
Countries

South Africa

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Related product monographs

Title
Type
Country
Summary of Product Characteristics (SPC)
UK