Rifampin: The Antibiotic for Tuberculosis and Other Infections
What is Rifampin?
Rifampin is a broad-spectrum antibiotic primarily used to treat tuberculosis (TB) and leprosy. It works by inhibiting bacterial RNA synthesis, which helps prevent the growth and reproduction of bacteria.
How Rifampin Works
Rifampin works by binding to the RNA polymerase enzyme in bacteria, preventing the transcription of DNA into RNA. This inhibits protein synthesis in bacteria, leading to bacterial death.
When to Use Rifampin
● Tuberculosis: Rifampin is a first-line treatment for active tuberculosis and is often used in combination with other antitubercular medications.
● Leprosy: It is also used to treat leprosy in combination with other drugs.
● Other Infections: Rifampin is used for treating meningitis, staphylococcal infections, and endocarditis caused by resistant bacteria.
Dosage
● Adult Dose for Tuberculosis: Typically, 10 mg/kg once daily, with a typical dose range of 300 mg to 600 mg.
● Pediatric Dose: For children, the dose is typically 10 mg/kg once daily, with a maximum of 600 mg/day.
Side Effects
● Common Effects: Nausea, vomiting, diarrhea, and stomach cramps.
● Serious Adverse Effects: Liver damage, orange discoloration of urine, and allergic reactions.
