Ciprofloxacin is a broad-spectrum fluoroquinolone antibiotic that is highly effective against both gram-positive and gram-negative bacteria. It was the first quinolone developed that could be administered orally to treat serious infections. A new extended release formulation, CiproMega, was developed to provide the benefits of once daily dosing for improved patient compliance compared to the previous twice daily dosing. Clinical trials demonstrated CiproMega was as effective as, and in some cases more effective than, the previous twice daily dosing regimen with fewer side effects.