Rifampicin drug taking time is not stipulated to be in the morning at 5:00 a.m., usually before breakfast to take the drug can be. Rifampicin can be taken before breakfast, fasting is more conducive to the absorption of the drug, effectively improve the therapeutic effect of the drug. In addition to treating tuberculosis and other tuberculosis (such as tuberculous meningitis, etc.), rifampicin is also used to treat serious infections (such as legionella pneumonia, osteomyelitis, endocarditis, etc.), trachoma, conjunctivitis, dysentery and so on. However, it should be noted that this product may cause adverse reactions in the digestive system (such as epigastric discomfort, anorexia, vomiting, nausea, etc.), the blood system (such as thrombocytopenia, hemolytic anemia, etc.), the endocrine system (such as menstrual disorders, etc.), and should be contraindicated in those who are allergic to the product, patients with severe hepatic insufficiency, patients with biliary tract obstruction, and pregnant women within 3 months. If you need to use the drug, it is recommended to use the drug under the guidance of a doctor, not blindly self-medication to avoid adverse effects.