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Maximum Strength Softgels

Simethicone 250 mg

Maximum Strength Gas-X is our most powerful gas-fighting medicine that starts to provide relief on contact. Nothing works faster (among leading brands) for fast gas relief.

Try the new 50 ct size!

Available in:

Softgel30 ct

New50 ct

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 2 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 makes Gas-X different from other gas relief products?

    Gas-X is the #1 doctor recommended anti-gas/#1 selling OTC gas relief brand in America. It is available in a variety of strengths (Extra, Ultra, Max), count sizes (10ct all the way up to 72ct), flavors, and formats (softgels & tablets).

  • 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.

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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


Extra Strength Chewables

Simethicone 125 mg


Extra Strength Softgels

Simethicone 125 mg


Ultra Strength Softgels

Simethicone 180 mg

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