Nafloxin (Ciprofloxacin)

Nafloxin (ciprofloxacin) is used to treat infections caused by susceptible Gram‑negative bacteria across several organ systems.

• Urinary tract infections: effective for acute uncomplicated and complicated UTIs caused by ciprofloxacin‑sensitive organisms.
• Respiratory tract infections: treats community‑acquired pneumonia and acute exacerbations of chronic bronchitis when the pathogen is susceptible.
• Skin and soft‑tissue infections: used for cellulitis, wound infections and diabetic foot infections caused by Gram‑negative bacteria.
• Intra‑abdominal infections: indicated for peritonitis, intra‑abdominal abscesses and postoperative infections with susceptible organisms.
• Gram‑negative bacterial infections: broad coverage for sepsis and bacteremia due to Enterobacteriaceae and Pseudomonas aeruginosa.

• Ciprofloxacin inhibits bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes essential for supercoiling and separation of DNA during replication and transcription. By stabilizing the enzyme‑DNA complex, it prevents the resealing of DNA breaks, leading to inhibition of bacterial cell division and ultimately bacterial death. This bactericidal activity is concentration‑dependent and effective against a wide range of Gram‑negative organisms, including Pseudomonas and Enterobacter species.

Ciprofloxacin may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects

• Nausea: mild gastrointestinal upset.
• Diarrhea: loose stools, sometimes watery.
• Headache: transient cranial discomfort.
• Rash: mild skin erythema.
• Elevated liver enzymes: transient increase in hepatic transaminases.

Serious or Rare Side Effects

• Tendon rupture: especially Achilles, may occur during or after therapy.
• QT interval prolongation: risk of cardiac arrhythmias.
• Severe hypersensitivity: anaphylaxis, Stevens‑Johnson syndrome.
• Clostridioides difficile infection: colitis secondary to gut flora disruption.

When prescribing Nafloxin, clinicians should observe several precautionary measures to minimize risks.

• Renal function: adjust use in patients with impaired kidney function and monitor serum creatinine.
• CNS effects: be aware of possible dizziness, seizures or confusion, especially in the elderly.
• Phototoxicity: advise patients to avoid excessive sunlight or UV exposure during therapy.
• Drug resistance: limit use to infections with confirmed susceptibility to reduce resistance development.
• Pregnancy and lactation: use only if clearly needed; benefits must outweigh potential fetal or neonatal risks.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze.

Ciprofloxacin can interact with several medicines, altering its efficacy or increasing toxicity.

Major Interactions (Avoid)

• Antacids containing aluminum or magnesium: reduce ciprofloxacin absorption; separate administration by at least 2 hours.
• Warfarin: may enhance anticoagulant effect, increasing INR; monitor coagulation parameters closely.
• Theophylline: ciprofloxacin can raise serum theophylline levels, risking toxicity.

Moderate Interactions (Monitor Closely)

• NSAIDs (e.g., ibuprofen, naproxen): may increase risk of central nervous system stimulation and seizures.
• Diabetic agents (e.g., insulin, sulfonylureas): ciprofloxacin may potentiate hypoglycemia; monitor blood glucose.
• Corticosteroids: combined use may raise risk of tendon rupture; advise caution.