Levofloxacina Almus (Levofloxacin)

Levofloxacin is a fluoroquinolone antibiotic used to treat a range of bacterial infections by targeting susceptible pathogens.

• Community‑Acquired Pneumonia: eradicates typical and atypical respiratory pathogens, improving lung function and reducing mortality.
• Acute Bacterial Sinusitis: clears sinus infection, relieving congestion, facial pain and discharge.
• Urinary Tract Infection: eliminates uropathogens in the bladder and kidneys, resolving dysuria and fever.
• Skin and Soft‑Tissue Infections: treats cellulitis, abscesses and wound infections caused by susceptible bacteria.
• Prostatitis: penetrates prostatic tissue to eradicate bacterial infection, alleviating pelvic pain and urinary symptoms.

• Levofloxacin exerts its antibacterial activity by inhibiting bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes essential for DNA supercoiling and replication. By binding to the enzyme‑DNA complex, it prevents the resealing step of DNA cleavage, leading to halted transcription and bacterial cell death. This dual‑target action provides broad‑spectrum activity against Gram‑negative and Gram‑positive organisms. The inhibition is concentration‑dependent and results in a bactericidal effect at clinically achievable levels.

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

Common Side Effects

• Nausea: mild stomach upset that may resolve without treatment.
• Diarrhea: loose stools that are usually self‑limiting.
• Headache: transient cranial discomfort.
• Dizziness: sensation of light‑headedness, especially when standing quickly.
• Insomnia: difficulty falling or staying asleep.
• Abdominal pain: cramping or discomfort in the stomach area.

Serious or Rare Side Effects

• Tendon rupture: sudden tendon failure, most often in the Achilles tendon.
• QT prolongation: lengthening of the cardiac repolarization interval, increasing arrhythmia risk.
• Clostridioides difficile infection: severe colitis presenting with watery diarrhea.
• Severe allergic reaction: anaphylaxis, swelling, or rash requiring immediate medical attention.
• Peripheral neuropathy: numbness or tingling in extremities.
• Hepatic dysfunction: elevated liver enzymes or jaundice.

Levofloxacin should be used with caution and under medical supervision.

• Renal function assessment: adjust dose in patients with impaired clearance.
• Tendon health: avoid use in patients with a history of tendon disorders or who engage in high‑impact activities.
• QT interval monitoring: caution when combined with other QT‑prolonging agents.
• Allergy screening: discontinue if signs of hypersensitivity appear.
• Pregnancy and lactation: use only if benefits outweigh potential risks, as safety data are limited.
• Store at ambient temperature: keep in original packaging, protect from moisture and direct sunlight.

Levofloxacin can interact with several medicines, requiring careful management.

Major Interactions (Avoid)

• Concurrent fluoroquinolones: additive toxicity and resistance risk.
• Non‑steroidal anti‑inflammatory drugs (NSAIDs): increased risk of tendon rupture.
• QT‑prolonging drugs (e.g., quinidine, macrolides): heightened risk of cardiac arrhythmias.

Moderate Interactions (Monitor Closely)

• Corticosteroids: may further increase tendon injury risk.
• Warfarin: levofloxacin can enhance anticoagulant effect, requiring INR monitoring.