Levofloxacine Eg (Levofloxacin Hemihydrate)

Levofloxacin is a fluoroquinolone antibiotic used to treat bacterial infections in various organ systems.

• Urinary tract infection: eradicates susceptible Gram‑negative and Gram‑positive pathogens, helping resolve cystitis and pyelonephritis.
• Respiratory tract infection: targets common respiratory bacteria, aiding recovery from bronchitis and community‑acquired pneumonia.
• Skin and soft‑tissue infection: eliminates causative organisms in cellulitis, abscesses and wound infections.
• Prostatitis: penetrates prostatic tissue to treat bacterial prostatitis effectively.

• Levofloxacin inhibits bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes essential for DNA supercoiling and replication. By binding to these enzymes, it prevents the unwinding and resealing of DNA strands, halting bacterial DNA synthesis and transcription, which leads to bacterial cell death.

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

Common Side Effects

• Nausea: mild gastrointestinal upset occurring in many patients.
• Diarrhea: loose stools that may be self‑limiting.
• Headache: transient cranial discomfort.
• Dizziness: sensation of light‑headedness or unsteadiness.

Serious or Rare Side Effects

• Tendon rupture: sudden tendon failure, especially in the Achilles tendon.
• QT interval prolongation: cardiac electrical disturbance that can lead to arrhythmia.
• Severe allergic reaction: anaphylaxis or angioedema requiring immediate medical attention.
• Clostridioides difficile‑associated diarrhea: severe colitis following disruption of normal gut flora.

Levofloxacine Eg requires careful clinical consideration before use.

• Assess renal function: adjust therapy in patients with impaired kidney function.
• Avoid in known hypersensitivity: discontinue if allergic reactions occur.
• Monitor for tendon pain: stop treatment at the first sign of tendonitis or swelling.
• Use caution in cardiac patients: evaluate QT prolongation risk before prescribing.
• Avoid concomitant QT‑prolonging drugs: assess drug‑drug interaction potential.
• Store at room temperature: keep in the original container, protect from moisture and light.

Levofloxacine Eg can interact with several medicines, requiring attention to avoid adverse outcomes.

Major Interactions (Avoid)

• Antacids containing magnesium or aluminum: markedly reduce levofloxacin absorption.
• Warfarin: may increase anticoagulant effect and bleeding risk.
• Co‑administration with other fluoroquinolones: additive toxicity without therapeutic benefit.

Moderate Interactions (Monitor Closely)

• Other QT‑prolonging agents (e.g., macrolides, antiarrhythmics): monitor ECG for interval changes.
• NSAIDs: may heighten central nervous system side effects such as seizures.
• Theophylline: levofloxacin can raise serum theophylline concentrations, requiring dosage adjustment.