Levofloxacin Unimed Pharma (Levofloxacin Hemihydrate)

Levofloxacin is indicated for bacterial infections of the eye and related ocular tissues.

• Bacterial conjunctivitis: reduces bacterial load and accelerates symptom resolution.
• Bacterial keratitis: eradicates causative organisms and promotes corneal healing.
• Corneal ulcer: combats infection and supports re‑epithelialization.
• Post‑operative ocular prophylaxis: prevents bacterial contamination after eye surgery.

• Levofloxacin exerts its antibacterial effect by binding to bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes essential for DNA supercoiling and replication. Inhibition of these targets prevents DNA synthesis and transcription, leading to bacterial cell death. The drug displays concentration‑dependent killing and a broad spectrum against Gram‑negative and Gram‑positive ocular pathogens.

Levofloxacin ocular preparations may cause a range of adverse reactions, varying from mild irritation to rare serious events.

Common Side Effects

• Eye irritation: transient burning or stinging sensation.
• Redness: mild conjunctival hyperemia.
• Foreign body sensation: feeling of grit in the eye.
• Blurred vision: temporary visual disturbance.
• Increased tearing: watery eyes.
• Photophobia: sensitivity to light.

Serious or Rare Side Effects

• Allergic reaction: swelling, rash, or hives around the eye.
• Stevens‑Johnson syndrome: severe skin and mucous membrane involvement.
• Tendon rupture: rare systemic effect, especially in the shoulder.
• Severe ocular inflammation: uveitis or keratitis worsening.
• Vision loss: abrupt decrease in visual acuity.
• Anaphylaxis: life‑threatening systemic hypersensitivity.

Before prescribing Levofloxacin ocular drops, clinicians should consider several safety precautions.

• Allergy assessment: avoid use in patients with known hypersensitivity to fluoroquinolones.
• Corneal integrity: do not use on perforated corneas or deep stromal defects without specialist advice.
• Tendon risk: caution patients with a history of tendon disorders, especially if systemic exposure is possible.
• Pregnancy and lactation: use only if the potential benefit justifies the potential risk to the fetus or infant.
• Drug interactions: review concomitant systemic fluoroquinolone use or medications that may affect wound healing.
• Store at room temperature: keep in the original container, protect from moisture and light.

Levofloxacin ocular drops can interact with other medicines, influencing efficacy or safety.

Major Interactions (Avoid)

• Antacids or mineral supplements (aluminum, magnesium, calcium, iron): may reduce systemic absorption if taken concurrently.
• Warfarin: increased anticoagulant effect, risk of bleeding.
• Theophylline: elevated plasma concentrations, potential toxicity.

Moderate Interactions (Monitor Closely)

• Corticosteroid eye drops: heightened risk of secondary ocular infection.
• Non‑steroidal anti‑inflammatory eye drops: possible delay in corneal healing.
• Diabetes medications: monitor blood glucose as infection control may affect levels.