Ciprofloxacin — sold under the brand name Cipro — is a powerful broad-spectrum fluoroquinolone antibiotic used to treat over a dozen serious bacterial infections. It works by disrupting bacterial DNA replication, stopping the infection from spreading. Taking ciprofloxacin may affect your brain or nervous system and cause serious side effects. This can occur after the first dose of ciprofloxacin. Find patient medical information for Ciprofloxacin (Cipro, Cipro XR, Proquin XR) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Cipro (ciprofloxacin), a fluoroquinolone antibiotic, is used to treat a wide range of bacterial infections, including certain skin, bone, joint, abdominal, prostate, respiratory and genitourinary tract infections. Ciprofloxacin (Cipro) is an antibiotic that treats bacterial infections. It doesn’t treat viral infections. Cipro (Ciprofloxacin) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Ciprofloxacin is used to treat bacterial infections in many different parts of the body. Ciprofloxacin oral liquid and tablets are also used to treat anthrax infection after inhalational exposure. This medicine is also used to treat and prevent plague (including pneumonic and septicemic plague). Cipro (ciprofloxacin), a fluoroquinolone antibiotic, is used to treat a wide range of bacterial infections, including certain skin, bone, joint, abdominal, prostate, respiratory and genitourinary tract infections. Ciprofloxacin (generic name), Cipro, Cipro XR (brand names) is an antibiotic prescribed for the treatment of many skin, lung, airway, bone, and joint infections caused by susceptible bacteria. Ciprofloxacin is used to treat a wide variety of infections, including infections of bones and joints, endocarditis, bacterial gastroenteritis, malignant otitis externa, bubonic plague, respiratory tract infections, cellulitis, urinary tract infections, prostatitis, anthrax, and chancroid. [4].