Levofloxacin Hikma Farmaceutica (Levofloxacin)

Levofloxacin is a fluoroquinolone antibiotic used to treat infections caused by susceptible bacteria.

• Community-acquired pneumonia: eradicates the causative bacteria, leading to clinical improvement and resolution of infection.
• Hospital-acquired pneumonia: eliminates pathogenic organisms, facilitating recovery in hospitalized patients.
• Acute bacterial sinusitis: clears sinus infection, reducing symptoms and preventing complications.
• Acute bacterial exacerbation of chronic bronchitis: controls bacterial flare‑ups, improving breathing function.
• Skin and soft tissue infections: destroys skin‑associated bacteria, promoting wound healing.
• Urinary tract infections: removes uropathogens, restoring urinary health.

• Levofloxacin inhibits bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes essential for DNA replication, transcription, and repair. By stabilizing the enzyme‑DNA complex, it prevents the resealing of DNA strands, leading to bacterial cell death. This bactericidal action is effective against a broad spectrum of Gram‑positive and Gram‑negative organisms.

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

Common Side Effects

• Nausea: mild gastrointestinal upset occurring shortly after infusion.
• Diarrhea: loose stools that may be self‑limiting.
• Headache: transient cranial discomfort.
• Dizziness: occasional light‑headed sensation.

Serious or Rare Side Effects

• Tendon rupture: sudden tendon pain or rupture, especially in the Achilles.
• QT interval prolongation: risk of cardiac arrhythmias.
• Severe allergic reactions: anaphylaxis, rash, or angioedema.
• Clostridioides difficile‑associated diarrhea: severe colitis requiring medical attention.

Before initiating therapy, consider the following precautions.

• Renal function assessment: adjust dosing in patients with impaired kidney function.
• Hypersensitivity screening: avoid use in individuals with known allergy to fluoroquinolones.
• QT prolongation risk: use cautiously in patients with cardiac conduction disorders.
• Tendon monitoring: advise patients to report tendon pain or swelling promptly.
• Concomitant QT‑prolonging drugs: evaluate drug regimen to minimize additive effects.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Levofloxacin can interact with several medications; awareness of interaction severity is essential.

Major Interactions (Avoid)

• Antacids containing aluminum or magnesium: reduce levofloxacin absorption, diminishing efficacy.
• Warfarin: may increase INR and bleeding risk.
• Theophylline: can raise theophylline plasma levels, leading to toxicity.

Moderate Interactions (Monitor Closely)

• Corticosteroids: combined use raises the risk of tendon rupture.
• Diabetic agents (e.g., insulin, sulfonylureas): may potentiate hypoglycemia.
• Other QT‑prolonging agents: monitor cardiac rhythm closely.