Levofloxacin Genoptim (Levofloxacin Hemihydrate)

• Levofloxacin is used to treat bacterial infections affecting several organ systems.
• Community‑acquired respiratory tract infections: effective bacterial eradication to resolve pneumonia and bronchitis symptoms.
• Acute bacterial sinusitis: reduces sinus inflammation by eliminating causative pathogens.
• Acute bacterial exacerbation of chronic bronchitis: shortens disease course and improves airflow.
• Uncomplicated urinary tract infections: clears uropathogens to relieve dysuria and frequency.
• Complicated urinary tract infections: achieves bacterial clearance in upper urinary tract involvement.
• Skin and soft‑tissue infections: combats Gram‑negative and Gram‑positive organisms causing cellulitis and wound infections.

• 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 serious.

Common Side Effects

• Nausea: mild gastrointestinal upset occurring in many patients.
• Diarrhea: loose stools that are usually self‑limiting.
• Headache: transient cranial discomfort.
• Dizziness: sensation of light‑headedness or imbalance.
• Abdominal pain: cramping or discomfort in the stomach area.
• Insomnia: difficulty falling or staying asleep.

Serious or Rare Side Effects

• Tendon rupture: sudden tendon pain or swelling, especially in the Achilles.
• QT interval prolongation: cardiac rhythm disturbances that may lead to arrhythmia.
• Severe allergic reactions: rash, swelling, or anaphylaxis.
• Clostridioides difficile infection: severe colitis presenting with watery diarrhea.
• Hepatic dysfunction: elevated liver enzymes or jaundice.
• Peripheral neuropathy: tingling, numbness, or weakness in extremities.

• Before prescribing levofloxacin, clinicians should consider patient‑specific factors.
• Assess renal function: adjust therapy in patients with impaired clearance.
• Monitor for tendon pain: discontinue if signs of tendinitis or rupture appear.
• Avoid in known fluoroquinolone hypersensitivity: prevent allergic reactions.
• Use with caution in elderly: higher incidence of CNS effects such as confusion.
• Store at room temperature: keep in the original container, protect from moisture and light.

Levofloxacin can interact with several medicines, altering efficacy or safety.

Major Interactions (Avoid)

• Warfarin: increased anticoagulant effect may raise bleeding risk.
• Antacids containing magnesium or aluminum: reduce levofloxacin absorption.
• Concurrent fluoroquinolones: additive toxicity and no therapeutic benefit.

Moderate Interactions (Monitor Closely)

• QT‑prolonging agents (e.g., macrolides): monitor ECG for arrhythmia.
• Theophylline: levofloxacin may raise serum theophylline levels.
• NSAIDs: increased risk of central nervous system stimulation and seizures.