Antitubercular drugs are used to treat tuberculosis (TB), which
iscaused by Mycobacterium tuberculosis.
Not always curative, these drugs can halt the progression of a mycobacterial
These drugs also are effective against less common
mycobacterial infections caused by M.
kansasii, M. avium-intracellulare,M. fortuitum, and related organisms.
Unlike most antibiotics, antitubercular drugs may
need to be ad-ministered over many months. This creates problems, such as
pa-tient noncompliance, the development of bacterial resistance, and drug
toxicity. (See Directly observable
therapy for TB)