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Phillips Milk of Magnesia

Generic name: magnesium hydroxidemag-NEE-see-um-hye-DROCK-side ]
Brand names: Dulcolax Liquid, Milk of Magnesia, Pedia-Lax Chewable, Phillips Milk of Magnesia, Ex-Lax Milk of Magnesia
Drug classes: Antacids, Laxatives

Medically reviewed by on Aug 11, 2023. Written by Cerner Multum.

What is Phillips Milk of Magnesia?

Magnesium is a naturally occurring mineral. Phillips Milk of Magnesia reduces stomach acid, and increases water in the intestines which may induce bowel movements.

Phillips Milk of Magnesia is used as a laxative to relieve occasional constipation.

Phillips Milk of Magnesia is also used as an antacid to relieve indigestion, sour stomach, and heartburn.

Phillips Milk of Magnesia may also be used for purposes not listed in this medication guide.

Phillips Milk of Magnesia side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Phillips Milk of Magnesia may cause serious side effects. Stop using Phillips Milk of Magnesia and call your doctor at once if you have:

Common side effects of Phillips Milk of Magnesia may include:

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


Do not use Phillips Milk of Magnesia without a doctor's advice if you have stomach pain, nausea, or vomiting.

Before taking this medicine

Do not use Phillips Milk of Magnesia without a doctor's advice if you have stomach pain, nausea, or vomiting.

Ask a doctor or pharmacist if Phillips Milk of Magnesia is safe to use if:

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

How should I take Phillips Milk of Magnesia?

Use exactly as directed on the label, or as prescribed by your doctor.

Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

You may need to shake the oral suspension before each use.

You must chew the chewable tablet before you swallow it.

Take this medicine with a full glass (8 ounces) of water.

When taken as a laxative, Phillips Milk of Magnesia should produce a bowel movement within 30 minutes to 6 hours.

Call your doctor if the condition you are treating with Phillips Milk of Magnesia does not improve, or if it gets worse while using this medicine.

Do not use Phillips Milk of Magnesia for longer than 7 days without medical advice.

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Since Phillips Milk of Magnesia is used when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose. Do not use two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include severe diarrhea, muscle weakness, shortness of breath, and little or no urination.

What should I avoid while taking Phillips Milk of Magnesia?

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

What other drugs will affect Phillips Milk of Magnesia?

Other drugs may affect Phillips Milk of Magnesia, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.