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calcium carbonate, famotidine, and magnesium hydroxide (Dual Action Complete)

Brand Names: Dual Action Complete, Duo Fusion, Pepcid Complete

Generic Name: calcium carbonate, famotidine, and magnesium hydroxide

What is calcium carbonate, famotidine, and magnesium hydroxide (Dual Action Complete, Duo Fusion, Pepcid Complete)?

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.

What are the possible side effects of this medicine (Dual Action Complete, Duo Fusion, Pepcid Complete)?

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using calcium carbonate, famotidine, and magnesium hydroxide and call your doctor at once if:

  • your heartburn gets worse; or
  • you still have heartburn after 2 weeks of taking calcium carbonate, famotidine, and magnesium hydroxide.

Less serious side effects may be more likely, and you may have none at all.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about this medicine (Dual Action Complete, Duo Fusion, Pepcid Complete)?

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.

What should I discuss with my healthcare provider before taking this medicine (Dual Action Complete, Duo Fusion, Pepcid Complete)?

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:

This medicine may contain phenylalanine. Check the medication label if you have phenylketonuria (PKU).

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

Do not give this medicine to a child younger than 12 years old without medical advice.

How should I take this medicine (Dual Action Complete, Duo Fusion, Pepcid Complete)?

Use exactly as directed on the label, or as prescribed by your doctor.

You must chew the chewable tablet before you swallow it.

Do not use more than two tablets in 24 hours.

Call your doctor if your symptoms do not improve after 14 days, or if you have ongoing stomach pain. You may have a more serious stomach condition.

In addition to taking this medication, other tips for managing heartburn include:

  • Do not lie flat or bend over soon after eating.
  • Do not eat late at night, or just before bedtime.
  • Eat slowly and do not eat big meals.
  • If you smoke, quit smoking.
  • If you are overweight, lose weight.
  • Raise the head of your bed.
  • Wear loose fitting clothing around your stomach.

Store at room temperature away from moisture and heat.

SLIDESHOW

Digestive Disorders: Common Misconceptions See Slideshow

What happens if I miss a dose (Dual Action Complete, Duo Fusion, Pepcid Complete)?

Since calcium carbonate, famotidine, and magnesium hydroxide is used when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose. Do not use two doses at one time.

What happens if I overdose (Dual Action Complete, Duo Fusion, Pepcid Complete)?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include nausea, vomiting, diarrhea, stomach pain, fast heart rate, or fainting.

What should I avoid while taking this medicine (Dual Action Complete, Duo Fusion, Pepcid Complete)?

Do not take this medicine together with regular famotidine (Pepcid, Pepcid AC, Pepcid RPD) or with other stomach acid reducers.

Avoid foods or drinks that are more likely to cause heartburn, such as chocolate, caffeine, alcohol, some fruits and vegetables, and rich, spicy, fatty, or fried foods.

What other drugs will affect calcium carbonate, famotidine, and magnesium hydroxide (Dual Action Complete, Duo Fusion, Pepcid Complete)?

Calcium carbonate, famotidine, and magnesium hydroxide can make it harder for your body to absorb other medicines you take by mouth. Ask a doctor or pharmacist before using calcium carbonate, famotidine, and magnesium hydroxide with any other medications.

Other drugs may affect calcium carbonate, famotidine, and magnesium hydroxide, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.

Where can I get more information (Dual Action Complete, Duo Fusion, Pepcid Complete)?

Your pharmacist can provide more information about calcium carbonate, famotidine, and magnesium hydroxide.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

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Reviewed on 9/9/2020

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