Drug side effects

Sometimes the drugs used to treat TB can cause side effects. It is important both for people undergoing preventive therapy and people being treated for TB disease to immediately let a doctor know if they begin having any unusual symptoms. Medicine for TB is relatively safe. Occasionally, the drugs may cause side effects. Some side effects are minor problems. Others are more serious. If you have a serious side effect, call your doctor or nurse immediately. You may be told to stop taking your medicine or to return to the clinic for tests.

The side effects listed below are serious. If you have any of these symptoms, call your doctor or nurse immediately:

• no appetite
• nausea
• vomiting
• yellowish skin or eyes
• fever for 3 or more days
• abdominal pain
• tingling fingers or toes
• skin rash
• easy bleeding
• aching joints
• dizziness
• tingling or numbness around the mouth
• easy bruising
• blurred or changed vision
• ringing in the ears
• hearing loss