Isoflurane Tablets should be taken for 6 months in the treatment of primary active tuberculosis and 8~12 months in the treatment of retreatment of smear-positive tuberculosis. 1. Primary treatment of active tuberculosis: In the treatment of primary treatment of active tuberculosis, isoflurane tablets should be taken for 2 months in the intensive period and 4 months in the consolidation period, totaling 6 months. 2. Retreatment of smear-positive pulmonary tuberculosis: in the treatment of retreatment of smear-positive pulmonary tuberculosis, isoflurane tablets should be taken for 2 months in the intensive period, and isoflurane tablets should be taken for 6~10 months in the consolidation period, totaling 8~12 months. The adverse reactions of Isofuture Tablets include allergic reaction, hepatotoxicity, etc. It is prohibited for those who are allergic to the drug, and should be used with caution in patients with abnormal liver function. The principle of treatment of tuberculosis is early, regular, whole course, appropriate amount, joint, do not stop the drug or adjust the dose in the process of treatment, and need to use the correct medication under the guidance of the physician.