Drug reference

magnesium hydroxide

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Drug class

Gastrointestinal Tract (Antacids)

Mechanism of action

Laxative: Promotes osmotic retention of fluid, which distends the colon with increased peristaltic activity and stimulates bowel evacuation. Antacid: Reacts with hydrochloric acid in stomach to form magnesium chloride.

Common side effects

  • Abdominal cramping
  • Electrolyte imbalance
  • Diarrhea

Contraindications

  • Renal failure Existing electrolyte imbalance Appendicitis symptoms or acute surgical abdomen Myocardial damage or heart block Fecal impaction or rectal fissures Intestinal obstruction or perforation Undiagnosed abdominal pain

Known interactions (1)

Related conditions

Frequently asked questions

What drug class is magnesium hydroxide?

magnesium hydroxide belongs to: Gastrointestinal Tract.

How does magnesium hydroxide work?

Laxative: Promotes osmotic retention of fluid, which distends the colon with increased peristaltic activity and stimulates bowel evacuation. Antacid: Reacts with hydrochloric acid in stomach to form magnesium chloride.

What are the common side effects of magnesium hydroxide?

Abdominal cramping, Electrolyte imbalance, Diarrhea

Which drugs interact with magnesium hydroxide?

eltrombopag

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