Indication: (1) Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. (2) Isoniazid alone is suitable for the prevention of various types of tuberculosis: ① Family members or close contacts of patients recently diagnosed with tuberculosis; ② Patients with a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and no formal anti-tuberculosis treatment in the past; ③ Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, whose PPD test is positive; ④ Patients under 35 years old with a positive PPD test; ⑤ People who are known or suspected to be infected with HIV, whose PPD test is positive, or people who have close contact with patients with active pulmonary tuberculosis.

Indication: 1 Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. 2 Isoniazid alone is suitable for the prevention of various types of tuberculosis: ① Family members or close contacts of patients recently diagnosed with tuberculosis; ② Those who have a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and have not received formal anti-tuberculosis treatment in the past; ③ Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, and whose tuberculin purified protein derivative test is positive; ④ Patients under 35 years old with a positive tuberculin purified protein derivative test; ⑤ Those who are known or suspected to be infected with HIV, whose tuberculin purified protein derivative test is positive, or those who have close contact with patients with active pulmonary tuberculosis.

Indication: 1. Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. 2. Isoniazid alone is suitable for the prevention of various types of tuberculosis: 1. Family members or close contacts of patients recently diagnosed with tuberculosis; 2. Patients with a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and no formal anti-tuberculosis treatment in the past; 3. Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, whose tuberculin purified protein derivative test is positive; 4. Patients under 35 years old with a positive tuberculin purified protein derivative test; 5. People who are known or suspected to be infected with HIV, whose tuberculin purified protein derivative test is positive, or who have close contact with patients with active pulmonary tuberculosis.

Indication: 1. Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. 2. Isoniazid alone is suitable for the prevention of various types of tuberculosis: 1. Family members or close contacts of patients recently diagnosed with tuberculosis; 2. Patients with a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and no formal anti-tuberculosis treatment in the past; 3. Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, whose tuberculin purified protein derivative test is positive; 4. Patients under 35 years old with a positive tuberculin purified protein derivative test; 5. People who are known or suspected to be infected with HIV, whose tuberculin purified protein derivative test is positive, or who have close contact with patients with active pulmonary tuberculosis.

Indication: 1. Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. 2. Isoniazid alone is suitable for the prevention of various types of tuberculosis: 1. Family members or close contacts of patients recently diagnosed with tuberculosis; 2. Patients with a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and no formal anti-tuberculosis treatment in the past; 3. Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, whose tuberculin purified protein derivative test is positive; 4. Patients under 35 years old with a positive tuberculin purified protein derivative test; 5. People who are known or suspected to be infected with HIV, whose tuberculin purified protein derivative test is positive, or who have close contact with patients with active pulmonary tuberculosis.

Indication: 1. Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. 2. Isoniazid alone is suitable for the prevention of various types of tuberculosis: 1. Family members or close contacts of patients recently diagnosed with tuberculosis; 2. Patients with a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and no formal anti-tuberculosis treatment in the past; 3. Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, whose tuberculin purified protein derivative test is positive; 4. Patients under 35 years old with a positive tuberculin purified protein derivative test; 5. People who are known or suspected to be infected with HIV, whose tuberculin purified protein derivative test is positive, or who have close contact with patients with active pulmonary tuberculosis.

Indication: 1. Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. 2. Isoniazid alone is suitable for the prevention of various types of tuberculosis: 1. Family members or close contacts of patients recently diagnosed with tuberculosis; 2. Patients with a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and no formal anti-tuberculosis treatment in the past; 3. Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, whose tuberculin purified protein derivative test is positive; 4. Patients under 35 years old with a positive tuberculin purified protein derivative test; 5. People who are known or suspected to be infected with HIV, whose tuberculin purified protein derivative test is positive, or who have close contact with patients with active pulmonary tuberculosis.

Indication: 1. Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. 2. Isoniazid alone is suitable for the prevention of various types of tuberculosis: 1. Family members or close contacts of patients recently diagnosed with tuberculosis; 2. Patients with a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and no formal anti-tuberculosis treatment in the past; 3. Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, whose tuberculin purified protein derivative test is positive; 4. Patients under 35 years old with a positive tuberculin purified protein derivative test; 5. People who are known or suspected to be infected with HIV, whose tuberculin purified protein derivative test is positive, or who have close contact with patients with active pulmonary tuberculosis.

Indication: 1. Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. 2. Isoniazid alone is suitable for the prevention of various types of tuberculosis: 1. Family members or close contacts of patients recently diagnosed with tuberculosis; 2. Patients with a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and no formal anti-tuberculosis treatment in the past; 3. Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, whose tuberculin purified protein derivative test is positive; 4. Patients under 35 years old with a positive tuberculin purified protein derivative test; 5. People who are known or suspected to be infected with HIV, whose tuberculin purified protein derivative test is positive, or who have close contact with patients with active pulmonary tuberculosis.

Indication: 1. Isoniazid combined with other anti-tuberculosis drugs is suitable for the treatment of various types of tuberculosis, including tuberculous meningitis and other mycobacterial infections. 2. Isoniazid alone is suitable for the prevention of various types of tuberculosis: 1. Family members or close contacts of patients recently diagnosed with tuberculosis; 2. Patients with a strong positive tuberculin purified protein derivative test (PPD) and a chest X-ray examination consistent with non-progressive tuberculosis, negative sputum bacteria, and no formal anti-tuberculosis treatment in the past; 3. Patients who are receiving immunosuppressants or long-term hormone therapy, certain blood diseases or reticuloendothelial system diseases (such as leukemia, Hodgkin's disease), diabetes, uremia, silicosis or gastrectomy, whose tuberculin purified protein derivative test is positive; 4. Patients under 35 years old with a positive tuberculin purified protein derivative test; 5. People who are known or suspected to be infected with HIV, whose tuberculin purified protein derivative test is positive, or who have close contact with patients with active pulmonary tuberculosis.