Alka-Seltzer antacid and pain reliever

Alka-Seltzer is a globally recognized brand of effervescent antacid and pain reliever that has been a staple in household medicine cabinets for nearly a century. Originally developed in the United States, the product formula combines aspirin, sodium bicarbonate, and anhydrous citric acid to treat symptoms ranging from indigestion to minor body aches. Its iconic 'plop, plop, fizz, fizz' advertising campaign helped establish it as a leading name in the consumer healthcare market.

Today, the brand is owned by Bayer AG, a German multinational pharmaceutical and life sciences company. While the brand has American roots, its manufacturing and distribution networks are now extensive, spanning multiple countries to serve various international markets. Bayer manages Alka-Seltzer as part of its Consumer Health division, ensuring the product meets global pharmaceutical safety and quality standards across its diverse manufacturing sites.

The brand's ownership transitioned to Bayer in the 1970s, which marked its growth from a domestic American success to a global pharmaceutical powerhouse. As of 2025, Bayer continues to innovate the product line, offering various formulations including gummies and chews alongside the classic effervescent tablets, maintaining its position as a market leader in the over-the-counter digestive health and pain relief sectors.