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Phillips Milk of Magnesia

Generic Name: magnesium hydroxide (mag NEE see um hye DROCK side)
Brand Name: Ex-Lax Milk of Magnesia, Milk of Magnesia, Pedia-Lax Chewable, Phillips Milk of Magnesia

Medically reviewed by Drugs.com on Nov 21, 2019 – 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.

Important Information

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:

  • you have kidney disease;

  • you are on a low-magnesium diet; or

  • you have a sudden change in bowel habits that has been ongoing for longer than 2 weeks.

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.

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.

Stop using Phillips Milk of Magnesia and call your doctor at once if you have:

Common side effects may include:

  • diarrhea; or

  • a decreased sense of taste.

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.

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.