Tue, 05 May 2026 15:38:16 +0000

The Shocking Way Alka Seltzer Works When Cold and Flu Strike When a cold or flu hits, your body is under siege—stuffy nose, sore throat, body aches, and often a pesky stuffed-up sinuses. Along with immune support and rest, one over-the-counter remedy stands out for its fast, surprising efficiency: Alka Seltzer. But how exactly does this familiar pink tablet work when cold and flu symptoms flare? In this revealing guide, we explore the shocking science behind Alka Seltzer’s relief — and why it’s more than just a quick-fix gimmick. ### What Is Alka Seltzer, and What Does It Do? Alka Seltzer isn’t merely an antacid—it’s a fast-acting pain reliever and fever reducer combined with effervescent oxygen action. Formulated as a dissolvable tablet filled with sodium bicarbonate, aspirin, and caffeine (in some versions), Alka Seltzer provides instant symptom relief by delivering key active ingredients directly to your bloodstream, even when your body is inflamed or dehydrated.