Simethicone 125 mg (antigas). Compare to Gas-X Extra Strength active ingredient (This product is not manufactured or distributed by GSK Consumer Healthcare, distributor of Gas-X Extra Strength). Relief of: Bloating. Pressure. Discomfort. 100% Quality Guarantee. Like it or not let us make it right. That's our quality promise. Questions or comments? Call toll free 855-423-2630. Other information: Store between 68-77 degrees F (20-25 degrees C). Do not refrigerate. Protect from light, heat, and moisture.