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Medications and Drugs

Brand Names: Helidac

Generic Name: bismuth subsalicylate, metronidazole, and tetracycline (Pronunciation: BIZ muth sub sa LISS i late, MET roe NYE da zole, and tet ra SYE kleen)

What is bismuth subsalicylate, metronidazole, and tetracycline (Helidac) (Helidac)?

Bismuth subsalicylate is a mild antibiotic.

Metronidazole and tetracycline are also antibiotics that fight bacteria in your body.

Bismuth subsalicylate, metronidazole, and tetracycline is a combination medicine used to treat peptic ulcer (duodenal ulcer) with H pylori infection.

This medication may also be used for purposes not listed in this medication guide.

What are the possible side effects of Helidac (Helidac)?

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

Call your doctor at once if you have:

  • severe diarrhea, or diarrhea that is watery or bloody;
  • confusion, severe headache, ringing in your ears, dizziness;
  • vision problems, pain behind your eyes;
  • nausea, upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • seizure (convulsions); or
  • pale skin, feeling light-headed or short of breath, rapid heart rate, trouble concentrating.

Common side effects may include:

  • stomach pain, indigestion, vomiting;
  • constipation, mild diarrhea;
  • cold symptoms such as stuffy nose, sneezing, sore throat;
  • mouth pain, metallic taste in your mouth;
  • vaginal itching or discharge;
  • mild headache; or
  • swollen tongue, black or "hairy" tongue, trouble swallowing.

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 bismuth subsalicylate, metronidazole, and tetracycline (Helidac) (Helidac)?

Do not use this medicine if you are pregnant or breast-feeding.

Tetracycline can make birth control pills less effective. Ask your doctor about using non-hormonal birth control (condom, diaphragm with spermicide) to prevent pregnancy while taking Helidac.

Do not give this medication to a child younger than 8 years old.

Do not drink alcohol while you are taking Helidac and for at least 1 day after you stop taking it.

Avoid taking Helidac with milk or other dairy products. Also avoid taking the medicine at the same time you take any multivitamins, mineral supplements, or antacids. These products can make it harder for your body to absorb Helidac.

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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