rifampin
noun
ri·fam·pin rī-ˈfam-pən 
variants or rifampicin
rī-ˈfam-pə-sən
: a semisynthetic antibiotic C43H58N4O12 used especially in the treatment of tuberculosis and to treat asymptomatic carriers of meningococci
Example Sentences
Recent Examples on the Web Even those who have been vaccinated against bacterial meningitis should still get antibiotic treatment, such as ciprofloxacin and rifampin. 
Kristen Jordan Shamus, Detroit Free Press, 27 Jan. 2022 The sole exception is rifampin, a tuberculosis antibiotic that is rarely used. Ella Lee, USA TODAY, 26 Oct. 2021 The only exception is rifampin, an antibiotic used to treat tuberculosis. Ella Lee, USA TODAY, 26 Oct. 2021 Extensively drug-resistant TB (XDR-TB) is a form of MDR-TB that is resistant to isoniazid and rifampin, in addition to fluoroquinolones and injectable second-line drugs. Cnn Editorial Research, CNN, 6 June 2021 In the past decade, scientists have come up with two shorter courses: a drug called rifampin taken every day for four months; or a combination of isoniazid and rifapentine, taken once weekly for three months. Apoorva Mandavilli, New York Times, 23 Sep. 2019 Research has found that the antibiotic rifampin, which is used to treat tuberculosis, and griseofulvin, a drug used to treat fungal infections, may decrease the effectiveness of hormonal birth control pills. Korin Miller, SELF, 27 July 2017 See More
Kristen Jordan Shamus, Detroit Free Press, 27 Jan. 2022 The sole exception is rifampin, a tuberculosis antibiotic that is rarely used. Ella Lee, USA TODAY, 26 Oct. 2021 The only exception is rifampin, an antibiotic used to treat tuberculosis. Ella Lee, USA TODAY, 26 Oct. 2021 Extensively drug-resistant TB (XDR-TB) is a form of MDR-TB that is resistant to isoniazid and rifampin, in addition to fluoroquinolones and injectable second-line drugs. Cnn Editorial Research, CNN, 6 June 2021 In the past decade, scientists have come up with two shorter courses: a drug called rifampin taken every day for four months; or a combination of isoniazid and rifapentine, taken once weekly for three months. Apoorva Mandavilli, New York Times, 23 Sep. 2019 Research has found that the antibiotic rifampin, which is used to treat tuberculosis, and griseofulvin, a drug used to treat fungal infections, may decrease the effectiveness of hormonal birth control pills. Korin Miller, SELF, 27 July 2017 See More Word History
Etymology
International Scientific Vocabulary, alteration of rifamycin, antibiotic derived from Streptomyces mediterranei
First Known Use
1966, in the meaning defined above
Medical Definition
rifampin
noun
ri·fam·pin rī-ˈfam-pən
variants or rifampicin
rī-ˈfam-pə-sən
: a semisynthetic antibiotic C43H58N4O12 that is used especially in the treatment of tuberculosis and to treat asymptomatic carriers of meningococci