- Metronidazole has been shown to cause cancer in mice and rats with long-term use. Talk with the doctor.
- It is used to treat or prevent GI (gastrointestinal) ulcers caused by infection.
- If you have an allergy to bismuth, metronidazole, salicylates, tetracycline, or any other part of this drug.
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you have kidney disease.
- If you have taken disulfiram within the past 2 weeks.
- If you drink alcohol or take any drugs that have alcohol.
- If you are taking penicillin.
- Tell dentists, surgeons, and other doctors that you use this drug.
- Avoid drinking alcohol. Avoid alcohol for at least 72 hours after the last dose. Drinking alcohol or taking products that have alcohol, such as cough syrup, may cause cramps, upset stomach, headaches, and flushing.
- You may get sunburned more easily. Avoid sun, sunlamps, and tanning beds. Use sunscreen and wear clothing and eyewear that protects you from the sun.
- Do not use longer than you have been told. A second infection may happen.
- This drug may affect certain lab tests. Be sure your doctor and lab workers know you take this drug.
- Do not give to children and teenagers who have or are getting better from flu signs, chickenpox, or other viral infections due to the chance of Reye’s syndrome. Reye’s syndrome causes very bad problems to the brain and liver.
- Do not give to a child younger than 8 years of age.
- Birth control pills and other hormone-based birth control may not work as well to prevent pregnancy. Use some other kind of birth control also like a condom when taking this drug.
- This drug may cause harm to the unborn baby if you take it while you are pregnant.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this drug while you are pregnant.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- A burning, numbness, or tingling feeling that is not normal.
- Change in eyesight.
- Change in balance.
- Very bad dizziness or passing out.
- Trouble speaking.
- Black, tarry, or bloody stools.
- Throwing up blood or throw up that looks like coffee grounds.
- Raised pressure in the brain has happened with this drug. Most of the time, this will go back to normal after this drug is stopped. Sometimes, loss of eyesight may happen and may not go away even after this drug is stopped. Call your doctor right away if you have a headache or eyesight problems like blurred eyesight, seeing double, or loss of eyesight.
- Upset stomach.
- Loose stools (diarrhea).
- Belly pain.
- Dark tongue and stool.
- To gain the most benefit, do not miss doses.
- Take as you have been told, even if you feel well.
- Take with meals and at bedtime.
- Take with a full glass of water.
- Do not take dairy products, calcium, iron, magnesium, zinc, multivitamins with minerals, colestipol, cholestyramine, didanosine, or antacids within 2 hours of this drug.
- Chew bismuth tablets.
- Swallow metronidazole tablets and tetracycline capsules whole. Do not chew, break, or crush.
- Swallow whole. Do not chew, break, or crush.
- Skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
- If you miss 4 doses, call your doctor.
- Store at room temperature.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs out of the reach of children and pets.
- Check with your pharmacist about how to throw out unused drugs.
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else’s drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
If you have any questions or concerns, talk with a member of your healthcare team. You can reach them Monday through Friday from 9:00 am to 5:00 pm at ____________________. After 5:00 pm, during the weekend, and on holidays, please call____________________. If there’s no number listed, or you’re not sure, call
Bismuth, Metronidazole, and Tetracycline©2015 Memorial Sloan Kettering Cancer Center - Generated on August 28, 2015