Rifampicin is an antibiotic primarily used to treat bacterial infections, especially tuberculosis and leprosy. It works by inhibiting the synthesis of RNA in bacteria, effectively stopping their growth and reproduction. This medication is often part of a combination therapy to prevent the development of drug-resistant strains of bacteria. While generally effective, Rifampicin can cause side effects such as liver issues and changes in urine color. Regular monitoring is essential during treatment to ensure safety and effectiveness.