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Generic name: aluminum hydroxide and magnesium trisilicatea-LOO-mi-num-HYE-drox-IDE-AND-mag-NEE-zee-um-TRYE-sil-i-kate ]
Drug class: Antacids

Medically reviewed by on Jun 26, 2024. Written by Cerner Multum.

What is Gaviscon?

Gaviscon are antacids that can lower the acidity of stomach acid.

Gaviscon is a combination medicine that is used to treat heartburn, acid indigestion, sour stomach, or upset stomach.

.Gaviscon is also used to provide temporary relief from heartburn and acid indigestion caused by acid reflux.

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

Gaviscon 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.

Common side effects may include diarrhea.

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.


Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

Before taking this medicine

Ask a doctor or pharmacist if Gaviscon is safe to use if:

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

How should I take Gaviscon?

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

You must chew the chewable tablet before you swallow it. Then drink about 4 ounces of water or other liquid.

Do not take more than 16 tablets in 24 hours.

Call your doctor if your symptoms do not improve, or if you have acid indigestion more than 2 times per week.

Do not take this medicine for longer than 2 weeks unless your doctor tells you to.

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Since Gaviscon 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.

What should I avoid while taking Gaviscon?

Ask a doctor or pharmacist before taking Gaviscon if you take other medicines regularly. Gaviscon can make it harder for your body to absorb other medicines you take by mouth.

What other drugs will affect Gaviscon?

Other drugs may affect Gaviscon, 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.

More about Gaviscon Regular Strength Tablets (aluminum hydroxide / magnesium trisilicate)

Related treatment guides

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.