Levofloxacin 1a Pharma (Levofloxacin)

Levofloxacin is a fluoroquinolone antibacterial indicated for several bacterial infections.

• Community‑acquired respiratory tract infections: eradicates causative bacteria and improves respiratory symptoms.
• Acute bacterial sinusitis: clears sinus infection and reduces congestion.
• Acute bacterial exacerbation of chronic bronchitis: controls bacterial overgrowth and eases cough.
• Urinary tract infections (including complicated cases): eliminates urinary pathogens and resolves dysuria.
• Skin and soft tissue infections: treats bacterial skin involvement and promotes healing.

• Levofloxacin inhibits bacterial DNA gyrase and topoisomerase IV, enzymes essential for DNA replication and transcription. By binding to these targets, it prevents bacterial DNA supercoiling and separation, leading to inhibition of bacterial cell division and ultimately bacterial cell death.

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

Common Side Effects

• Nausea: mild to moderate stomach upset.
• Diarrhea: loose stools, sometimes watery.
• Headache: transient cranial discomfort.
• Dizziness: feeling light‑headed or unsteady.
• Insomnia: difficulty falling or staying asleep.
• Abdominal pain: cramping or discomfort in the stomach area.

Serious or Rare Side Effects

• Tendon rupture: sudden tendon pain or loss of function.
• QT interval prolongation: risk of cardiac arrhythmias.
• Severe allergic reactions: rash, swelling, or anaphylaxis.
• Clostridioides difficile infection: severe colitis with watery diarrhea.
• Peripheral neuropathy: numbness or tingling in extremities.
• Stevens‑Johnson syndrome: severe skin blistering and mucosal involvement.

Before prescribing Levofloxacin, clinicians should consider several safety factors.

• Renal impairment: dose adjustment may be required.
• History of tendon disorders: avoid use due to risk of tendon rupture.
• QT prolongation risk: monitor ECG in patients with cardiac risk factors.
• Pregnancy and lactation: use only if clearly needed after risk assessment.
• Drug interactions: review concomitant medications for potential interactions.
• Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Levofloxacin can interact with other medicines, affecting safety and efficacy.

Major Interactions (Avoid)

• Antacids containing magnesium or aluminum: markedly reduce levofloxacin absorption.
• Warfarin: may enhance anticoagulant effect, increasing bleeding risk.
• Other fluoroquinolones: additive toxicity and increased risk of tendon injury.

Moderate Interactions (Monitor Closely)

• Theophylline: levofloxacin can raise plasma theophylline levels.
• Cyclosporine: may increase cyclosporine concentrations.
• NSAIDs: concurrent use may raise the chance of central nervous system side effects.