Ethambutol and Isoniazid (Systemic)

Side Effects of This Medicine

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 immediately if any of the following side effects occur:

More common

Clumsiness or unsteadiness; dark urine; loss of appetite; nausea; numbness, tingling, burning, or pain in hands and feet; unusual tiredness or weakness; vomiting; yellow eyes or skin

Less common

Chills; pain and swelling of joints, especially big toe, ankle, or knee; tense, hot skin over affected joints

Rare

Blurred vision or loss of vision, with or without eye pain; convulsions (seizures); fever; joint pain; mental depression; mood or other mental changes; skin rash; sore throat; unusual bleeding or bruising

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:

More common

Confusion; diarrhea; disorientation; headache; stomach pain