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Medications and Drugs

Brand Names: Ron Acid

Generic Name: magaldrate (Pronunciation: MAG al drate)

What is magaldrate (Ron Acid)?

Magaldrate is an aluminum-containing antacid.

Magaldrate is used to treat heartburn, indigestion, or stomach upset.

Magaldrate may also be used for other purposes not listed in this medication guide.

What are the possible side effects of magaldrate (Ron Acid)?

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

Stop using magaldrate and call your doctor at once if you have a serious side effect such as:

  • severe stomach pain, cramps, or bloating;
  • severe nausea or vomiting;
  • ongoing loss of appetite, weight loss;
  • severe constipation;
  • painful or difficult urination;
  • bone pain or muscle weakness;
  • mood changes; or
  • swelling in your hands or feet.

Less serious side effects may include:

  • mild constipation or diarrhea;
  • mild loss of appetite; or
  • light-colored stools.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about magaldrate (Ron Acid)?

You should not use this medication if you are allergic to magaldrate.

Before you take magaldrate, tell your doctor if you have kidney disease, Alzheimer's dementia, severe constipation or diarrhea, stomach ulcer or intestinal bleeding, a blockage in your stomach or intestines, or a colostomy or ileostomy.

Do not take this medication for longer than 2 weeks without your doctor's advice. Call your doctor if your symptoms do not improve, or if they get worse while taking magaldrate.

This medication can cause you to have unusual results with certain medical tests such as an x-ray, CT scan, or MRI taken using a radioactive dye. Be sure any doctor who treats you knows ahead of time that you are taking magaldrate.

Stop taking magaldrate and call your doctor if you have severe stomach pain or cramps, severe nausea or vomiting, bone pain or muscle weakness, mood changes, or swelling in your hands or feet.

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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