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Alka-Seltzer Anti-Gas

Generic Name: simethicone (sye METH i cone)
Brand Name: Alka-Seltzer Anti-Gas, Bicarsim, Bicarsim Forte, Gas Aide, Gas-X, Little Tummys, Mi-Acid Gas Relief, Mylanta Gas Maximum Strength, Mylicon, Phazyme, SimePed

Medically reviewed by Drugs.com on Nov 3, 2020 – Written by Cerner Multum

What is Alka-Seltzer Anti-Gas?

Alka-Seltzer Anti-Gas is used to relieve painful pressure caused by excess gas in the stomach and intestines. This medicine is for use in babies, children, and adults.

Alka-Seltzer Anti-Gas may also be used for purposes not listed in this medication guide.

Important Information

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

You should not use Alka-Seltzer Anti-Gas if you are allergic to it.

Ask a doctor or pharmacist if it is safe for you to take Alka-Seltzer Anti-Gas if you are allergic to any drugs, or if you have any type of serious illness (especially one that affects your stomach or intestines).

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

The liquid form may contain phenylalanine. Talk to your doctor before using this form of simethicone if you have phenylketonuria (PKU).

How should I take Alka-Seltzer Anti-Gas?

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

Do not take more of this medicine than directed.

Alka-Seltzer Anti-Gas works best if you take it after meals and at bedtime.

You must chew the chewable tablet before you swallow it.

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

Alka-Seltzer Anti-Gas liquid drops can be mixed with water, baby formula, or other liquids to make swallowing easier for an infant or child.

Always follow directions on the medicine label about giving Alka-Seltzer Anti-Gas to a child. Call your doctor if the child's gas symptoms do not improve after treatment with this medicine.

You may need to follow a special diet or increase your exercise while using Alka-Seltzer Anti-Gas. Follow all instructions of your doctor or dietitian. Learn about the foods to eat or avoid to help control your condition.

Store at room temperature away from moisture, heat, and light. Do not allow the liquid form of this medicine to freeze.

What happens if I miss a dose?

Since Alka-Seltzer Anti-Gas 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 Alka-Seltzer Anti-Gas?

Ask your doctor before using an antacid, and use only the type your doctor recommends. Some antacids may contain Alka-Seltzer Anti-Gas.

Alka-Seltzer Anti-Gas side effects

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

Less serious side effects may be more likely, and you may have none at all.

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 Alka-Seltzer Anti-Gas?

Other drugs may affect Alka-Seltzer Anti-Gas, 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.