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Medications and Drugs

Brand Names: Prevpac

Generic Name: amoxicillin, clarithromycin, and lansoprazole (Pronunciation: a MOX i SIL in, kla RITH roe MYE sin, LAN soe PRA zole)

What is amoxicillin, clarithromycin, and lansoprazole (Prevpac)?

Amoxicillin is an antibiotic in the penicillin group of drugs. It fights bacteria in your body.

Clarithromycin is in a group of drugs called macrolide antibiotics. Clarithromycin fights bacteria in your body.

Lansoprazole decreases the amount of acid produced in the stomach.

The combination of amoxicillin, clarithromycin, and lansoprazole is used to prevent stomach ulcer caused by infection with Helicobacter pylori (H. pylori).

Amoxicillin, clarithromycin, and lansoprazole may also be used for other purposes not listed in this medication guide.

What are the possible side effects of amoxicillin, clarithromycin, and lansoprazole (Prevpac)?

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

Call your doctor at once if you have a serious side effect such as:

  • diarrhea that is watery or bloody;
  • signs of new infection, such as fever, chills, body aches, flu symptoms, mouth sores;
  • easy bruising or bleeding, unusual weakness;
  • agitation, confusion, unusual thoughts or behavior;
  • dizziness, fainting, fast or pounding heartbeat; or
  • fever, sore throat, and headache with a severe blistering, peeling, and red skin rash.

Less serious side effects may include:

  • unusual or unpleasant taste in your mouth;
  • headache;
  • nausea, vomiting, stomach pain;
  • constipation, dark colored stools;
  • dry mouth, increased thirst; or
  • vaginal itching or discharge.

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 amoxicillin, clarithromycin, and lansoprazole (Prevpac)?

You should not take this medication if you are allergic to amoxicillin (Amoxil, Trimox, Dispermox), clarithromycin (Biaxin), lansoprazole (Prevacid), or to certain other antibiotics.

While you are taking amoxicillin, clarithromycin, and lansoprazole, do not take any of the following medications: cisapride (Propulsid), ergotamine (Ergomar, Cafergot, Ercaf, Migergot), dihydroergotamine (D.H.E. 45, Migranal Nasal Spray), ergonovine (Ergotrate), or pimozide (Orap).

Tell your doctor if you have kidney or liver disease, myasthenia gravis, or if you are allergic to any drugs (especially any antibiotics).

Amoxicillin can make birth control pills less effective, which may result in pregnancy. Before taking amoxicillin, clarithromycin, and lansoprazole, tell your doctor if you use birth control pills.

There are many other medicines that can interact with amoxicillin, clarithromycin, and lansoprazole. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.



Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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