Over-the-counter (OTC) products are medicines you can buy without a doctor’s prescription.

Antacids reduce the effect of (neutralize) the acid in your stomach. They can provide fast, short-term relief. Many OTC medicines combine different antacids.

H2 blockers reduce the amount of acid your stomach makes. While they don’t relieve symptoms right away, H2 blockers relieve symptoms for a longer period of time than antacids. They usually start to work within an hour. Examples of H2 blockers available over the counter are ranitidine (brand name: Zantac) or famotidine (brand name: Pepcid).

Proton pump inhibitors greatly reduce your body’s production of acid. They work well for that isn’t resolved by antacids or H2 blockers. It may take a little longer for a proton pump inhibitor to help your symptoms than an H2 blocker, but relief will last longer. These medicines are most helpful for people who have heartburn often — more than two days a week. Omeprazole (brand name: Prilosec) is an example of a proton pump inhibitor.


Alka Seltzer Original Effervescent Antacid Tablets - 24 Ea

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CODE: 016500040118

Marketplace Price: $5.49

Price: $3.98

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  • Alka Seltzer Original Effervescent Antacid Tablets.
  • For the relief of: heartburn, acid indigestion, and sour stomach when accompanied with headache or body aches and pains;
  • upset stomach with headache from over-indulgence in food and drink;
  • pain alone (headache or body and muscular aches and pains).

Active Ingredients:

  • per tablet: Aspirin (325 mg), Sodium Bicarbonate (1916 mg), Citric Acid (1000 mg).

Inactive Ingredients:

  • Sodium Acetylsalicylate, Sodium Citrate.


  • Adults: Dissolve 2 tablets in 4 ounces of water and drink every 4 hours not to exceed 8 tablets in 24 hours. (60 years or older, 4 tablets in a 24-hour period).


  • Children and teenagers should not use this medicine for chicken pox or flu symptoms before a doctor is consulted about Reye´s syndrome, a rare but serious illness reported to be associated with aspirin.
Alka Seltzer Original Effervescent Antacid Tablets.