For an upset stomach, feel better fast with Alka Seltzer effervescent antacid/pain reliever. For the relief of heartburn, acid indigestion, and sour stomach when accompanied with headache or body aches and pains, upset stomach with headache from over-indulgance in food or drink, pain alone (headache or body and muscular aches and pains). Active ingredients: Aspirin 325 mg, Citric Acid 1000 mg, Sodium Bicarbonate 1916 mg
