Levofloxacin Sandoz (Levofloxacin)

Levofloxacin is a fluoroquinolone antibiotic that targets bacterial DNA replication, making it effective for several common infections.

• Community‑acquired pneumonia: eradicates the causative bacteria and improves respiratory function.
• Acute bacterial sinusitis: reduces sinus inflammation by eliminating pathogenic organisms.
• Acute exacerbation of chronic bronchitis: shortens symptom duration and prevents further lung damage.
• Uncomplicated urinary‑tract infection: clears infection in the bladder and urethra.
• Complicated urinary‑tract infection: treats infections involving renal parenchyma or structural abnormalities.
• Skin and soft‑tissue infections: resolves cellulitis, abscesses, and other bacterial skin conditions.

• Levofloxacin inhibits bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes essential for DNA supercoiling and separation during replication and transcription. By binding to the quinolone‑binding region, it prevents resealing of DNA breaks, leading to accumulation of double‑strand breaks and bacterial cell death. The drug shows concentration‑dependent bactericidal activity against a broad spectrum of Gram‑negative and Gram‑positive organisms.

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

Common Side Effects

• Nausea: mild to moderate stomach upset.
• Diarrhea: loose stools, sometimes watery.
• Headache: transient cranial discomfort.
• Dizziness: sensation of light‑headedness.
• Insomnia: difficulty falling or staying asleep.
• Rash: mild skin erythema or itching.

Serious or Rare Side Effects

• Tendon rupture: sudden pain and loss of function, especially in the Achilles tendon.
• QT interval prolongation: may precipitate cardiac arrhythmias.
• Clostridioides difficile infection: severe colitis following gut flora disruption.
• Severe allergic reactions: anaphylaxis, angioedema, or Stevens‑Johnson syndrome.
• Hepatic dysfunction: elevated liver enzymes or jaundice.
• Peripheral neuropathy: numbness or tingling in extremities.

When prescribing Levofloxacin, clinicians should consider several precautionary measures to minimize risk.

• Assess renal function: adjust dose in patients with impaired clearance.
• Avoid use in patients with known hypersensitivity to fluoroquinolones.
• Monitor for tendon pain: discontinue if tendonitis or rupture is suspected.
• Use caution in patients with QT‑prolongation risk factors.
• Avoid concomitant use with non‑steroidal anti‑inflammatory drugs (NSAIDs) when possible.
• Store at ambient temperature: keep below 25°C in the original packaging, protect from moisture.

Levofloxacin can interact with other medicines, altering its effectiveness or increasing toxicity.

Major Interactions (Avoid)

• Antacids containing magnesium or aluminum: reduce levofloxacin absorption.
• Warfarin: may increase anticoagulant effect and bleeding risk.
• Cyclosporine or tacrolimus: can raise fluoroquinolone plasma concentrations.
• Other QT‑prolonging agents (e.g., moxifloxacin): additive cardiac risk.

Moderate Interactions (Monitor Closely)

• Corticosteroids: may increase risk of tendon rupture.
• Diabetic agents: potential alteration of glucose control.