50mg Isoniazide Tablets contain the active ingredient isoniazid. This works by inhibiting the synthesis of mycolic acids, which are essential components of the bacterial cell wall in Mycobacterium tuberculosis. It is an antibiotic medication primarily used in the treatment and prevention of tuberculosis (TB), a bacterial infection caused by Mycobacterium tuberculosis. In addition to treating active TB, 50mg Isoniazide Tablets may also be used for the prevention of TB infection in individuals who have been exposed to the bacteria or are at high risk of developing TB, such as close contacts of TB patients or individuals with HIV/AIDS.