Bismuth Subsalicylate, Metronidazole, and Tetracycline—For H. pylori (Systemic)

Brand Names : Helidac

Side Effects of This Medicine

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

More common

Abdominal pain; bloody or black, tarry stools; diarrhea; nausea

Less common

Burning, prickling, or tingling sensations; dizziness; vomiting

Rare

Bloody vomit; convulsions (seizures); fainting; heart attack; high blood pressure; irritation of the mouth; irritation of the tongue; joint pain and swelling; pain; sensitivity of skin to sunlight; skin rash; trouble in swallowing

Symptoms of overdose

Clumsiness or unsteadiness; confusion; continuing ringing or buzzing in ears; convulsions; diarrhea; fast heartbeat; fast or deep breathing; fever; nausea; pain, numbness, or tingling in arms, legs, hands, or feet; unusual tiredness; vomiting

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:

Less common or rare

Burning or itching around anus; constipation; general feeling of discomfort or illness; loss of appetite; nervousness; trouble in sleeping; unusual tiredness or weakness

In some patients, bismuth subsalicylate in this combination of medicines may cause dark tongue and/or grayish black stools. This is only temporary and will go away when you stop taking bismuth subsalicylate.

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.