<prompt> Most common drug used in Leprosy is:DapsoneClofazimineEthionamideOfloxacin  <response>: Dapsone: Ref 709-KDT 752-KDT 6thClassification of antileprotic drugs1. Sulfone - Dapsone - DPS2. Phenazine derivative - clofazimine3. Antitubercular drugs - Rifampin, Ethionamide4. Other antibiotics - Ofloxacin, Minocycline, clarithromycinDAPSONE: - Inhibition of PABA incorporation in to folic acid. Simplest, oldest, cheapest, most active and most commonly used in leprosy.. RIFAMPIN: - Most important Bactericidial drug in leprosy Clofazimine: - Dye with leprostatic and anti-inflammatory properties 