<prompt> Latest drug used for treatment of MDR TB patients is ?BedaquilineAmithiozoneCapreomycinLinezolid  <response>: Ans. isai.e., Bedaquiline Ref: Principles and practice of infectious diseases by lohn E. Bennet, p. 4741Bedaquiline:It is a diaryl quinolone.It acts by inhibiting M. tuberculosis adenosine triphosphate synthase.FDA has approved bedaquiline for the management of drug resistant tuberculosis with a black box warning, relating to possible cardiac toxicity and sudden death. 