Possible side effects of Flagyl

Consumer Information (PDR)

Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor immediately. Only your doctor can determine whether it is safe for you to continue taking Flagyl.

Two serious side effects that have occurred with Flagyl are seizures and numbness or tingling in the arms, legs, hands, and feet. If you experience either of these symptoms, stop taking the medication and call your doctor immediately.

• More common side effects may include:
  Abdominal cramps, constipation, diarrhea, headache, loss of appetite, nausea, upset stomach, vomiting

Consumer Information (MedFacts)

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Appetite loss; constipation; diarrhea; dizziness; headache; metallic taste; nausea; stomach upset; vomiting.

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody stools; increased or decreased urination; numbness, tingling, or burning of your arms, hands, legs, or feet; seizures; severe diarrhea; sore throat, chills, or fever; stomach pain or cramps; vaginal itching, odor, or discharge; white patches in the mouth.

This is not a complete list of all side effects that may occur. If you have questions or need medical advice about side effects, contact your doctor or health care provider. You may report side effects to the FDA at 1-800-FDA-1088 (1-800-332-1088) or at http://www.fda.gov/medwatch.

Advanced Consumer Information (Micromedex)

• seizures (convulsions);

• fever, chills, body aches, sore throat, flu symptoms;

• numbness or tingling in your hands or feet;

• white patches or sores inside your mouth or on your lips;

• pain or burning when you urinate; or

• diarrhea that is watery or bloody.

Less serious side effects may include:

• nausea, stomach pain, diarrhea;

• headache, dizziness, loss of balance;

• vaginal itching or discharge;

• dry mouth or unpleasant metallic taste;

• cough, sneezing, runny or stuffy nose; or

• swollen or sore tongue.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.

Consumer Information (Cerner Multum)

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.

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:

In some patients metronidazole may cause dark urine. This is only temporary and will go away when you stop taking this medicine.

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