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Calcium carbonate, famotidine, and magnesium hydroxide
  • Treatments
  • GERD

Calcium carbonate, famotidine, and magnesium hydroxide

Generic name: calcium carbonate, famotidine, and magnesium hydroxide [ KAL-see-um-KAR-bo-nate, fam-OH-ti-deen, mag-NEE-see-um-hye-DROX-ide ]
Brand names: Dual Action Complete, Duo Fusion, Pepcid Complete
Dosage form: oral tablet, chewable (800 mg-10 mg-165 mg)
Drug class:H2 antagonists

Medically reviewed by Drugs.com on Nov 4, 2021. Written by Cerner Multum.

What is calcium carbonate, famotidine, and magnesium hydroxide?

Famotidine is a histamine-2 blocker that decreases the amount of acid the stomach produces. Calcium and magnesium are naturally occurring minerals that neutralize acid in the stomach.

Calcium carbonate, famotidine, and magnesium hydroxide is a combination medicine used to relieve heartburn caused by acid indigestion and sour stomach.

Calcium carbonate, famotidine, and magnesium hydroxide may also be used for purposes not listed in this medication guide.

Warnings

You should not use this medicine if you are allergic to famotidine or similar stomach acid reducers, such as ranitidine, cimetidine, Zantac, or Tagamet).

Do not use this medicine if you have trouble swallowing food, if you are vomiting blood, or if you have bloody or tarry stools.

Before taking this medicine

Heartburn can mimic early symptoms of a heart attack. Get emergency medical help if you have chest pain that spreads to your jaw or shoulder and you feel anxious or light-headed.

You should not use this medicine if you are allergic to famotidine or similar stomach acid reducers, such as ranitidine, cimetidine, Zantac, Tagamet, and others.

Do not use calcium carbonate, famotidine, and magnesium hydroxide if you have:

  • trouble swallowing food, or pain when swallowing;

  • vomiting with blood; or

  • black, bloody, or tarry stools.

Ask a doctor or pharmacist if this medicine is safe to use if you have ever had:

  • wheezing or trouble breathing when you have heartburn;

  • nausea, vomiting, or stomach pain;

  • unusual weight loss;

  • kidney disease; or

  • if you have had heartburn for longer than 3 months.