Side effects of ethambutol usually return 24 hours after stopping the drug. Ethambutol is a bacteriostatic anti-tuberculosis drug that also treats atypical Mycobacterium tuberculosis infections. Symptoms such as blurred vision, eye pain, red-green color blindness, or loss of vision may occur after taking ethambutol. Taking ethambutol incidence is relatively small will appear cold, joint swelling and pain lesions and other symptoms, may need to be combined with rifampicin, isoniazid and other related drugs for anti-tuberculosis, according to the cycle of treatment and weight of the medication, the treatment must be continued for 1 to 2 years, sometimes even years or indefinite use of the drug, should not be taken under the age of 13 years. If there is no change in symptoms or symptoms worsen and new symptoms appear after using the medication, the medication should be stopped immediately and the patient should go to the hospital. The medication should be used under the supervision of a doctor.