Spectrum Of Activity
Tuberculosis - HIV infection
Meningococcal infectious disease, carrier
Rifampin is used clinically in the management of infections due to mycobacteria.
Perform liver function tests (ALT and AST levels) at baseline.
Perform bilirubin level, serum creatinine level, and CBC panel (including platelets) at baseline and continue follow-up monitoring in patients who have abnormalities.
Obtain acid-fast bacilli smear and culture from sputum until 2 consecutive culture specimens are negative.
Perform chest x-rays after 2-3 months of treatment and at end of treatment.
Monitor coagulation tests in patients at risk of vitamin K deficiency.
Disseminated intravascular coagulation
Multiple drug-drug interactions
CYP450, transporter interactions:
Substrate of: OATP1B1, PGP
Induces: 1A2, 2B6, 2C8/9, 2C19, 2D6, 3A4, PGP
Inhibits: OAT, OATP1B1
Antimicrobial class: Antitubercular, Rifamycin
Pregnancy category: C
Average serum half life: 1.5-5 hours
CSF penetration: Therapeutic
Doses greater than 600 mg 1-2 times weekly increase risk of serious adverse effects (shortness of breath, shock, anaphylaxis, and renal failure).
Severe hepatic dysfunction have been reported in patients with liver dysfunction and concomitant hepatotoxic agents; monitoring is recommended and discontinuation may be necessary.
Discontinue use if systematic hypersensitivity reactions are suspected.
Monitoring recommended in patients at risk of vitamin K deficiency and consider discontinuation if abnormal coagulation tests and/or bleeding occurs.