If you vomit or find the drug in the vomit after a short interval of taking the TB drug, you need to take the drug again, if the interval is longer, you don’t need to take the drug again. If vomiting occurs within a short period of time after taking anti-tuberculosis drugs, or if complete drugs can be found in the vomit, most of the drugs have not been digested and absorbed, in which case the drugs need to be taken again. If vomiting occurs after a longer period of time after taking anti-tuberculosis drugs, most of the drugs have been digested and absorbed by the gastrointestinal tract, and there is no need to take the drugs again even if they have been vomited. Patients who vomit after taking anti-tuberculosis drugs are advised to consult a doctor in time to have the cause clarified by a professional physician for targeted treatment.