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Extra Strength Softgels

Simethicone 125 mg

Gas-X Extra Strength is a gas-fighting medicine that works fast in an easy-to-swallow softgel. For mild symptoms associated with gas and bloating, take as directed and feel better in no time. Gas-X is the #1 doctor-recommended brand* in gas.

*Among OTC brands

Available in:

softgel10, 20, 50, 72 and 120 ct

Also available in: Chewables

Product Details


Use for the relief of pressure, bloating, and fullness commonly referred to as gas.


Adults and children 12 years or older: swallow with water 1 or 2 softgels as needed after meals and at bedtime. Do not exceed 4 softgels in 24 hours except under the advice and supervision of a physician.


Keep out of reach of children.

Frequently Asked Questions

You’ve got questions. We’ve got answers. Check out our  FAQs page.

  • What is the active ingredient in Gas-X?

    The active ingredient in Gas-X is simethicone. Simethicone is the #1 doctor-recommended OTC ingredient for fast gas relief – it helps break up gas bubbles in your stomach and intestines. Once this trapped gas is broken down, your body can then get rid of the gas naturally.

  • Can I take Gas-X?

    If you are uncertain if Gas-X is appropriate for you, please speak to your doctor or a pharmacist. Simethicone, the active ingredient in Gas-X, works fast, without being absorbed into the bloodstream. Please use Gas-X products only as directed.

Young woman leaning back in her chair relaxing with her arms behind her head

How It Works

softgelGas-X works fast to relieve your symptoms of gas and bloating.

moleculesThe active ingredient in Gas-X, simethicone, is a gas relief agent.

bubblesSimethicone helps break up the gas bubbles in your digestive tract.

How Gas-X Works

More Gas-X Products


Total Relief Chews

Simethicone 250 mg
Calcium Carbonate 750 mg



Extra Strength Chewables

Simethicone 125 mg



Ultra Strength Softgels

Simethicone 180 mg



Maximum Strength Softgels

Simethicone 250 mg


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