Levofloxacin Altan (Levofloxacin)

• Levofloxacin is a broad‑spectrum fluoroquinolone antibiotic used to treat infections caused by susceptible bacteria.
• Community‑acquired pneumonia: achieves bacterial eradication and clinical cure in adult patients.
• Acute bacterial sinusitis: reduces sinus inflammation and promotes symptom resolution.
• Skin and soft‑tissue infections: clears pathogenic bacteria and supports wound healing.
• Urinary tract infections: eliminates uropathogens and relieves urinary symptoms.

• Levofloxacin inhibits bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes essential for DNA supercoiling and replication. By blocking these targets, the drug prevents bacterial DNA synthesis and transcription, leading to bactericidal activity against a wide range of Gram‑negative and Gram‑positive organisms.

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

Common Side Effects

• Nausea: mild to moderate stomach upset.
• Diarrhea: loose stools, occasionally watery.
• Headache: transient cranial discomfort.
• Dizziness: sensation of light‑headedness.
• Rash: mild skin erythema.
• Elevated liver enzymes: transient increase in hepatic markers.

Serious or Rare Side Effects

• Tendon rupture: sudden tendon pain or swelling, especially in the Achilles.
• QT interval prolongation: risk of cardiac arrhythmias.
• Clostridioides difficile infection: severe colitis after antibiotic exposure.
• Severe allergic reactions: anaphylaxis, angioedema.
• Peripheral neuropathy: numbness or tingling in extremities.
• Hepatotoxicity: significant liver injury with jaundice.

• Before prescribing Levofloxacin, clinicians should consider several safety factors.
• Renal function: adjust dosing in patients with impaired renal clearance.
• CNS effects: monitor for seizures, particularly in patients with a history of epilepsy.
• QT interval: avoid in individuals with known QT prolongation or who use other QT‑prolonging agents.
• Tendon health: discontinue immediately if tendon pain, swelling, or rupture occurs.
• Pregnancy and lactation: use only when the potential benefit justifies the potential risk to the fetus or infant.
• Store at ambient temperature: keep in the original container, protect from light and moisture.

Levofloxacin can interact with several medicines, requiring careful management.

Major Interactions (Avoid)

• Antacids containing magnesium or aluminum: reduce levofloxacin absorption.
• Warfarin: increase anticoagulant effect and bleeding risk.
• NSAIDs: heightened risk of central nervous system toxicity.
• Cyclosporine: may raise levofloxacin plasma concentrations.

Moderate Interactions (Monitor Closely)

• Theophylline: possible increase in theophylline levels, leading to toxicity.
• Corticosteroids: increased likelihood of tendon rupture.
• Diabetes medications: may affect glucose control, requiring monitoring.