Drugs
FDA Continuing Rifampin/Rifapentine Products Analysis
FDA says it is continuing to investigate the presence of 1-methyl-4-nitrosopiperazine (MNP) in rifampin or 1-cyclopentyl-4-nitrosopiperazine (CPNP) in rifapentine approved for sale in the U.S. An agency statement says both antibacterial drugs are used to treat tuberculosis and rifampin also is used to