Air-X SF Simethicone 40 mg. Tablets to cure flatulence, indigestion, cimethicone. In the formula, 1 tablet contains the active ingredient Simethicone 40 mg. Efficacy: Relieve flatulence indigestion, colic Dosage and directions for use: Chew before swallowing. Adults take 1-2 tablets 4 times a day when symptoms are present (not to exceed 12 tablets per day). Warning : 1. If symptoms do not improve within 3 days, consult a doctor or pharmacist. 2. This drug is not an antacid coated with gastric ulcers.