Simply, this one is tough on heartburn. As soon as you feel the first signs of heartburn or acid indigestion, Alka-Seltzer® Heartburn’s effervescent lemon-lime formula starts working immediately neutralizing acid on contact. Alka-Seltzer Heartburn does not contain aspirin. It goes to work on contact, unlike H2 blockers like Pepcid AC® or Zantac® and PPIs like Prilosec OTC®*and Nexium.
*Prilosec OTC is not for immediate relief. It is only for frequent heartburn and must be taken for 14 straight days.Download Drug Facts PDF
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