Levofloxacin Pf Rafarm (Levofloxacin Hemihydrate)

Levofloxacin ophthalmic solution is a fluoroquinolone antibiotic used to treat bacterial infections of the eye.

• Bacterial conjunctivitis: eliminates the causative bacteria, leading to rapid reduction of redness, tearing, and discharge.
• Bacterial keratitis: penetrates corneal tissue to eradicate bacterial pathogens, supporting corneal epithelial recovery and preventing scarring.
• Other ocular bacterial infections: provides broad‑spectrum antibacterial activity against susceptible organisms, helping to restore ocular comfort and visual clarity.

• Levofloxacin inhibits bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes essential for DNA replication, transcription, and repair. By binding to the ATP‑binding sites of these enzymes, it prevents the supercoiling and separation of DNA strands, leading to bacterial cell death. This mechanism confers bactericidal activity against a wide range of Gram‑positive and Gram‑negative ocular pathogens.

Levofloxacin ophthalmic solution may cause ocular and systemic adverse reactions.

Common Side Effects

• Eye irritation: transient burning or stinging upon instillation.
• Redness: mild conjunctival hyperemia.
• Foreign body sensation: feeling of grit in the eye.
• Blurred vision: temporary visual disturbance.

Serious or Rare Side Effects

• Tendon rupture: rare systemic tendon injury.
• Severe allergic reaction: angioedema or anaphylaxis.
• Corneal ulceration: worsening of corneal integrity.
• Vision loss: rare but serious visual impairment.

Before prescribing Levofloxacin ophthalmic solution, clinicians should consider several precautionary measures.

• Allergy assessment: avoid use in patients with known hypersensitivity to fluoroquinolones.
• Corneal disease: use cautiously in patients with pre‑existing corneal ulceration or epithelial defects.
• Systemic fluoroquinolone exposure: monitor for additive tendon toxicity if patient receives systemic fluoroquinolones.
• Pregnancy and lactation: prescribe only if potential benefit justifies potential risk, as safety data are limited.
• Pediatric use: limit to patients over a certain age as per local guidelines.
• Store at room temperature: keep in original container, protect from light and moisture.

Levofloxacin ophthalmic solution can interact with other medications, influencing efficacy or safety.

Major Interactions (Avoid)

• Systemic fluoroquinolones: concurrent use may increase risk of tendon rupture.
• Anticholinergic eye drops: may reduce ocular absorption of levofloxacin.
• Corticosteroid eye preparations: may mask signs of infection.

Moderate Interactions (Monitor Closely)

• Non‑steroidal anti‑inflammatory drugs (NSAIDs): monitor for delayed wound healing.
• Herbal supplements containing quinine: may potentiate QT prolongation risk.
• Vitamin C eye drops: may affect drug stability.