Mylanta for the Treatment of Heartburn, Ulcer and More

Uses, Actions, and Side Effects of the Antacid Mylanta

Talking to a pharmacist about heartburn.
What is Mylanta, how is it used, and what symptoms does it treat?. Universal Images Group/Getty Images

What is Mylanta and What Symptoms is it Used For?

Mylanta is an antacid containing aluminum hydroxide and magnesium hydroxide. (Mylanta ultratabs, chewable tablets and gelcaps contain the antacid calcium carbonate.) It may be used to help with symptoms of heartburn, indigestion, and stomach upset. Mylanta gas preparations instead contain simethicone which can be helpful in treating intestinal gas.

What Conditions Does Mylanta Treat?

Mylanta may treat the symptoms above that arise from conditions including gastritis, hiatal hernias and peptic ulcer.

It is also used to treat symptoms of gastroesophageal reflux disease (GERD).

How Does Mylanta Work?

The aluminum hydroxide and magnesium hydroxide in Mylanta, as well a calcium carbonate in other preparations work by reducing acid in the stomach.

Product Details and Preparations

There are several different preparations of Mylanta available in pharmacies. These include:

  • Mylanta Ultimate Strength (liquid)
    Flavors: Cherry, Mint
    Active Ingredients (in each 5 mL teaspoon)
    Aluminum hydroxide 500 mg
    Magnesium hydroxide 500 mg

  • Mylanta Supreme (liquid)
    Flavors: Cherry
    Active Ingredients (in each 5 mL teaspoon)
    Calcium carbonate 400 mg
    Magnesium hydroxide 135 mg

  • Mylanta Regular Strength (liquid)
    Flavors: Original, Mint
    Active Ingredients (in each 5 mL teaspoon)
    Aluminum hydroxide 200 mg (equivalent to dried gel, USP)
    Magnesium hydroxide 200 mg
    Simethicone 20 mg

  • Mylanta Maximum Strength (liquid)
    Flavors: Original, Cherry, Mint, Orange Créme
    Active Ingredients (in each 5 mL teaspoon)
    Aluminum hydroxide 400 mg (equivalent to dried gel, USP)
    Magnesium hydroxide 400 mg
    Simethicone 40 mg

  • Mylanta Ultra Tabs
    Flavors: Cherry Créme, Cool Mint
    Active Ingredients (in each 5 mL teaspoon)
    Calcium carbonate 700 mg
    Magnesium hydroxide 300 mg

  • Mylanta Gelcaps
    Active Ingredients (in each gelcap)
    Calcium carbonate 550 mg
    Magnesium hydroxide 125 mg

  • Children's Mylanta Chewable Tablets
    Flavors: Bubble Gum
    Active Ingredients (in each tablet)
    Calcium carbonate 400 mg

  • MYLANTA® Gas Maximum Strength Softgels
    Active Ingredients (in each softgel)
    Simethicone 125 mg

  • MYLANTA® Gas Maximum Strength Chewable Tablets
    Flavors: Cherry, Mint
    Active Ingredients (in each tablet)
    Simethicone 125 mg

How Should Mylanta Be Used?

Mylanta comes as both a chewable tablet and liquid to take by mouth. Chew tablets slowly and thoroughly; do not swallow them whole. (They are less effective if swallowed whole.) Drink a full glass of water after taking the tablets. Shake the oral liquid well before each use to mix the medicine evenly. The liquid may be mixed with water or milk.

Follow the directions on the package label or on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take aluminum hydroxide and magnesium hydroxide antacids exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Do not take antacids for more than 1-2 weeks unless prescribed by your doctor.

Precautions When Taking Mylanta

Before taking Mylanta:

  • Tell your doctor and pharmacist if you are allergic to aluminum hydroxide and magnesium hydroxide antacids or any other drugs.
  • Tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially Lanoxin (digoxin), (Didronel (etirdronate), Dilantin (phenytoin), tetracycline antibiotics, and vitamins. Your doctor will be able to tell you whether you can take antacids with these medications, and if so, whether you can do so at the same time, or take the medications at a different time. Calcium may decrease the effectiveness of other medications. The time delay is usually at least 2 hours of taking an antacid.
  • Tell your doctor if you have or have ever had stomach problems or kidney disease.
  • Tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking aluminum hydroxide and magnesium hydroxide antacids, call your doctor.
  • Check the ingredients on other medications you are taking. Other medications, such as Maalox, may contain the same ingredients, and using both products may result in an excess dose.

Possible Side Effects of Mylanta

Although side effects from aluminum hydroxide, magnesium hydroxide or calcium carbonate in Mylanta are not common, they can occur. Simethicone does not usually cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

  • Upset stomach
  • Vomiting
  • Stomach pain
  • Belching
  • Constipation
  • Dry mouth
  • Increased urination
  • Loss of appetite
  • Metallic taste

Bottom Line

Mylanta is designed to be used for the short term control of minor symptoms. If your symptoms persist or worsen make sure to see your doctor. This medication should only be used for an extended period of time under the careful guidance of a physician.

Sources:

U.S. National Library of Medicine. Medline Plus. Aluminum Hydroxide and Magnesium Hydroxide. Updated 10/24/16. https://medlineplus.gov/druginfo/meds/a601013.html

U.S. National Library of Medicine. Calcium Carbonate. Updated 09/15/15. https://medlineplus.gov/druginfo/meds/a601032.html

U.S. National Library of Medicine. Simethicone. Updated 10/24/16. https://medlineplus.gov/druginfo/meds/a682683.html

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