Curist Gas Relief with Simethicone 250 mg, 300 softgels. Curist Simethicone Gas Relief 250mg works fast in minutes to relieve gas, bloating and discomfort. Take a higher strength of simethicone for a more powerful gas relief - stronger than even Gas-X Extra Strength, Gas-X Ultra Strength, and Phazyme Ultra Strength. By taking a higher strength, you can take less medicine throughout the day and feel the benefit of a stronger simethicone. Curist Gas Relief comes in a bulk size with 300 simethicone soft gels of simethicone 250 mg. *Maximum Strength among Curist products with the same active ingredient.