Pefloxacin is a synthetic fluoroquinolone antibiotic effective against a broad spectrum of Gram-negative and Gram-positive bacteria. It is used in pharmaceutical applications to treat infections including urinary tract, respiratory tract, skin and soft tissue, bone and joint, gastrointestinal, abdominal, and sexually transmitted infections such as gonorrhea. Its excellent tissue and fluid penetration makes it suitable for managing systemic infections, particularly those resistant to other antibiotics.