Mebendazole may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
- stomach pain, discomfort, or swelling
- loss of appetite
Some side effects can be serious. If you experience any of these symptoms call your doctor immediately or get emergency medical treatment:
- shortness of breath
- difficulty breathing or swallowing
- fever, sore throat, chills, or other signs of infection
Mebendazole may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.