Weakness after taking tuberculosis drugs may be related to the symptoms of tuberculosis infection, drug side effects and so on. Weakness after taking tuberculosis drugs is firstly considered to be related to the symptoms of tuberculosis infection, such as low fever, fatigue, cough, hemoptysis and so on, which are the typical symptoms of tuberculosis. Combined with the use of anti-tuberculosis drugs, it is mainly considered to be a normal symptom manifestation, with the continuous deepening of the treatment, can gradually return to normal. In addition, it may also be related to the side effects of anti-tuberculosis drugs. Such as isoniazid, rifampicin and other anti-tuberculosis drugs, some people in the long-term use of liver function damage, while the treatment process of immunity is relatively low, which leads to the symptoms of fatigue. It is recommended to seek medical advice in a timely manner, subject to the doctor’s opinion.