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Ciprofloxacin is a prescription fluoroquinolone antibacterial medicine. Systemic forms include oral tablets, oral suspension, and intravenous formulations, while ophthalmic and otic products have separate local indications. Oral ciprofloxacin treats selected infections caused by susceptible bacteria and is used only when bacterial infection is proven or strongly suspected.
read more about ciprofloxacin ...Ciprofloxacin blocks bacterial DNA gyrase and topoisomerase IV. These enzymes are needed for DNA replication, transcription, repair, and recombination. Inhibition of these enzymes disrupts bacterial DNA processes and results in bacterial cell death in susceptible organisms.
Oral ciprofloxacin has labeled uses for selected skin, bone and joint, intra-abdominal, gastrointestinal, respiratory, urinary, and genital infections. It also treats chronic bacterial prostatitis, typhoid fever, plague, and inhalational anthrax after exposure. Pediatric systemic use is limited to specific indications under current labeling.
Adult dosing depends on infection type, severity, and kidney function. Common regimens range from 250 mg to 750 mg every 12 hours. Treatment length ranges from a single dose for uncomplicated gonorrhea to several weeks for bone and joint infections or 60 days for inhalational anthrax after exposure.
Systemic ciprofloxacin carries a boxed warning for tendon injury, peripheral neuropathy, central nervous system effects, and worsening of myasthenia gravis. Other warnings include serious hypersensitivity, liver injury, aortic aneurysm or dissection, QT prolongation, severe blood glucose changes, photosensitivity, and Clostridioides difficile-associated diarrhea. Dose changes are required with reduced kidney function.
Yes. Ciprofloxacin is a fluoroquinolone antibacterial medicine.
Several adult regimens use dosing every 12 hours, though dose and duration depend on the infection and kidney function.
Yes, but systemic pediatric use is limited to specific labeled indications such as complicated urinary tract infection, anthrax, and plague.
Yes. Reduced kidney function can require a longer dosing interval or other dose changes.
Ciprofloxacin. MedlinePlus. https://www.medlineplus.gov/druginfo/meds/a688016.html. Date Accessed September 22, 2026.
Ciprofloxacin. PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/ciprofloxacin. Date Accessed September 22, 2026.
Ciprofloxacin. StatPearls. https://www.ncbi.nlm.nih.gov/books/NBK535454/. Date Accessed September 22, 2026.
DailyMed - CIPROFLOXACIN tablet, film coated. https://www.dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=44b6cefc-7638-4437-95e7-8f239f66a9d4. Date Accessed September 22, 2026.
FDA Drug Safety Communication: FDA Updates Warnings for Oral and Injectable Fluoroquinolone Antibiotics Due to Disabling Side Effects. https://www.fda.gov/media/119537/download?attachment=. Date Accessed September 22, 2026.