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Medications and Drugs

Brand Names: Concentrated Phillips Milk of Magnesia, Ex-Lax Milk of Magnesia, Milk of Magnesia, Phillips Milk of Magnesia

Generic Name: magnesium hydroxide (Pronunciation: mag NEE see um hye DROCK side)

What is magnesium hydroxide (Concentrated Phillips Milk of Magnesia, Ex-Lax Milk of Magnesia, Milk of Magnesia, Phillips Milk of Magnesia)?

Magnesium is a naturally occurring mineral. Magnesium is important for many systems in the body especially the muscles and nerves. Magnesium hydroxide also reduces stomach acid, and increases water in the intestines which may induce defecation.

Magnesium hydroxide is used as a laxative to relieve occasional constipation (irregularity) and as an antacid to relieve indigestion, sour stomach, and heartburn.

Magnesium hydroxide may also be used for purposes other than those listed in this medication guide.

What are the possible side effects of magnesium hydroxide (Concentrated Phillips Milk of Magnesia, Ex-Lax Milk of Magnesia, Milk of Magnesia, Phillips Milk of Magnesia)?

Stop taking magnesium hydroxide and seek emergency medical attention if you experience an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives).

Other, less serious side effects may be more likely to occur. Continue to take magnesium hydroxide and talk to your doctor if you experience diarrhea or an upset stomach.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about magnesium hydroxide (Concentrated Phillips Milk of Magnesia, Ex-Lax Milk of Magnesia, Milk of Magnesia, Phillips Milk of Magnesia)?

Before taking magnesium hydroxide, tell your doctor if you have any other medical conditions, allergies, or if you take other medicines or other herbal/health supplements. Magnesium hydroxide may not be recommended in some situations.

Do not use magnesium hydroxide as a laxative if you have stomach (abdominal) pain, nausea, or vomiting, unless directed by a doctor. If you notice a sudden change in bowel habits that persists over a period of 2 weeks, consult your healthcare provider before using a laxative. Magnesium hydroxide should not be used for longer than one week, unless otherwise directed by your healthcare provider. Rectal bleeding or failure to have a bowel movement after use of a laxative may indicate a more serious condition; stop using magnesium hydroxide and contact your healthcare provider.



Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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