Tuberculosis (TB) remains a significant public health concern in Thailand and globally, especially in tropical regions, with pulmonary TB being predominant. Besides affecting the lungs, TB can also impact extrapulmonary organs. Standard TB treatment involves a combination of drugs administered for at least 6 months, but it can cause adverse effects such as hepatitis. Hepatotoxicity, occurring in 20-60% of patients, is commonly linked to isoniazid, rifampicin, and pyrazinamide. Slow acetylators of the NAT2 gene are particularly susceptible. Previous research suggests N-acetylcysteine (NAC) may mitigate hepatotoxicity, especially among slow acetylators. A recent study by Kittichai Samaithongcharoen and team showed that NAC reduced hepatotoxicity incidence significantly among slow acetylators. This underscores the potential of NAC in preventing drug-induced hepatotoxicity in TB treatment, warranting further investigation against standard treatment protocols.