If prevention isn't enough, over-the-counter medications such as Tums, Zantac or Pepcid are the next step.

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It also markets more than 25 vaccines, and makes over-the-counter products such as Tums indigestion tablets and Aquafresh toothpaste.

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The AGA report says that 70% of the 61 million people in the U.S. who suffer from heartburn can get relief from readily available antacids (Tums, Rolaids), which neutralize stomach acids, and the so-called H2 receptor antagonists (Pepcid AC, Tagamet HB and Zantac 75), which reduce production of stomach acids.

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