Alka-Seltzer Extra Strength Effervescent Tablets provide fast, heavy-duty fizzing relief from your toughest multi-symptom discomforts, including acid indigestion, heartburn, and sour stomach, particularly when accompanied by severe body aches or a headache. This extra-strength formula pairs a maximum-strength pain reliever with powerful, heat-treated antacids that rapidly neutralize excess stomach acid on contact. When fully dissolved in water, the effervescent solution enters your system quickly, allowing the fast-acting ingredients to go to work immediately to ease pain and settle your stomach after overindulgence or stressful days.
