Dr.pharmacist
Pepcid AC

Pepcid AC

famotidine

OTC DrugPepcid AC
Reviewed by Younghun Cho

Pharmacist's Verdict

Pepcid AC is a reliable and generally well-tolerated over-the-counter medicine for preventing and treating occasional heartburn. It works best when taken before meals or at the first sign of symptoms, offering quick and effective relief.

Ingredient Analysis

Famotidine

Pros & Cons

Pros

  • Effectively reduces stomach acid, providing relief from heartburn and acid indigestion.
  • Can be taken to prevent heartburn before eating foods or drinks that usually cause it.
  • Starts working relatively quickly (within 15-30 minutes) to ease discomfort.
  • Generally has a good safety record for short-term, occasional use.
  • Widely available and easy to purchase without a prescription.

Cons

  • Not intended for chronic (long-term) or severe heartburn; if symptoms last over 3 months, see a doctor.
  • Can hide symptoms of more serious problems like ulcers or cancer, especially if used inappropriately.
  • May interact with certain medications that need stomach acid to work properly, such as some antifungals or HIV medicines.
  • Possible side effects include headache, dizziness, diarrhea, or constipation, though these are uncommon.
  • Do not use if you have trouble swallowing, vomiting with blood, or black stools, as these are signs of a serious condition.

Safety Information

Warnings

Warnings Allergy alert Do not use if you are allergic to famotidine or other acid reducers Do not use if you have trouble or pain swallowing food, vomiting with blood, or bloody or black stools. These may be signs of a serious condition. See your doctor. with other acid reducers Ask a doctor before use if you have had heartburn over 3 months. This may be a sign of a more serious condition. heartburn with lightheadedness, sweating, or dizziness chest pain or shoulder pain with shortness of breath; sweating; pain spreading to arms, neck or shoulders; or lightheadedness frequent chest pain frequent wheezing, particularly with heartburn unexplained weight loss nausea or vomiting stomach pain kidney disease Ask a doctor or pharmacist before use if you are taking a prescription drug. Acid reduce…

Is Pepcid AC safe for you?

See pregnancy, interactions, and common concerns answered in our pharmacist safety FAQ.

Read safety review →

References

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    FDA Drug Label — Famotidine

    FDA DailyMed: Famotidine · FDA

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    FDA Drug Label — Maximum Strength PEPCID AC Icy Cool Mint

    FDA DailyMed: Maximum Strength PEPCID AC Icy Cool Mint · FDA

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    Agarwal SM, Stogios N, Ahsan ZA, et al., The Cochrane database of systematic reviews, 2022 · PubMed

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    , 2006 · PubMed

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