based on laboratory tests such as rodent carcinogenicity studies. Although there are no data available to directly evaluate the carcinogenic potential of MNP, information available on closely related nitrosamine compounds was used to calculate lifetime exposure limits for MNP. As of January 2021, the FDA continues to investigate the presence of (MNP) in rifampin or (CPNP) in rifapentine approved for sale in the US. Names Rifampicin is the INN and BAN, while rifampin is the USAN. Rifampicin may be abbreviated R, RMP, RA, RF, or RIF (US). Rifampicin is also known as rifaldazine, rofact, and rifampin in the United States, also as rifamycin SV. Its chemical name is . Rifampicin is available under many brand names worldwide. References External links Antileprotic drugs CYP1A2 inducers CYP3A4 inducers Piperazines Pregnane X receptor agonists Rifamycin antibiotics Wikipedia medicine articles ready to translate Anti-tuberculosis drugs World Health Organization essential medicines Nephrotoxins Orphan drugs Italian inventions