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Side Effects
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- Itching in the vagina
- Pain during sexual intercourse
- Thick, white vaginal discharge with no odor or with a mild odor
- Abdominal or stomach cramping or pain
- Burning or irritation of penis of sexual partner
- Burning on urination or need to urinate more often
- Itching, stinging or redness of the genital area
Some 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. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Less common- Diarrhea
- Dizziness or lightheadedness
- Dryness of mouth
- Headache
- Feeling of a furry tongue
- Loss of appetite
- Metallic taste or other change in taste sensation
- Nausea
- Vomiting
Metronidazole may cause your urine to become dark. This is harmless and will go away when you stop using this medicine.
After you stop using this medicine, it may still produce some side effects that need attention. During this period of time, check with your doctor immediately if you notice the following side effects:
- Any vaginal or genital irritation or itching
- Pain during sexual intercourse
- Thick, white vaginal discharge not present before treatment, with no odor or with a mild odor
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
