system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All of the following are true about Rifampicin, EXCEPT:
assistant
The correct answer is  Rifampicin is a bactericidal antibiotic. Rifampicin is an effective liver enzyme-inducer, promoting the upregulation of hepatic cytochrome P450 enzymes (such as CYP2C9 and CYP3A4), increasing the rate of metabolism of many other drugs. It reduces the efficacy of hormonal contraception. It is used in prophylactic therapy (not for treatment) against Neisseria meningitidis (meningococcal) infection.