Magnesium hydroxide
Magnesium hydroxide is an antacid, a medicine that neutralises stomach acid. It is used to relieve heartburn and acid indigestion. At larger amounts it also acts as a laxative, so it can loosen the stools.
Also known as: Milk of magnesia, Magnesia magma, Magnesium antacid, Magnesium hydroxide suspension
Pharmacist review in progress. This page is based on the sources listed below and is being checked by our registered pharmacist.

How does Magnesium hydroxide work?
It reacts with stomach acid and neutralises it. In the bowel, unabsorbed magnesium draws water in, which can soften the stool.
Who should be careful
- Kidney disease or a magnesium-restricted diet: ask a doctor first
- Prescription medicines: leave a gap of 2 to 4 hours
- Loose stools or diarrhoea can occur
- Symptoms lasting more than 2 weeks need a doctor's check
Type of medicine
Magnesium hydroxide belongs to this type of medicine.
Medicines that contain Magnesium hydroxide
These medicines sold in India contain Magnesium hydroxide. They are listed A to Z, not ranked.
- Digene · VERIFY on pack chewable tablet or oral gel (verify on pack)
What is Magnesium hydroxide used for?
Combination medicines that contain Magnesium hydroxide are used for these conditions.
Other medicines of the same type
These active ingredients are of the same type as Magnesium hydroxide.
Common questions
Can magnesium hydroxide cause loose stools?
Yes. Magnesium can draw water into the bowel and cause loose stools or diarrhoea. This is why it is often combined with aluminium hydroxide, which tends to cause constipation. Ask a doctor if it keeps happening.
Sources
- Antacids. NHS (UK)
- Antacid (aluminum hydroxide, magnesium hydroxide, simethicone) oral suspension: OTC drug label (revised 1/2016). DailyMed, US National Library of Medicine
- ATC/DDD Index: A02AA04 magnesium hydroxide. WHO Collaborating Centre for Drug Statistics Methodology
