Moxifloxacina Ciclum (Moxifloxacin)

Moxifloxacin is a broad‑spectrum fluoroquinolone used to treat bacterial infections in various organ systems.

• Community‑acquired bacterial pneumonia: eradicates the causative pathogens and improves respiratory function.
• Acute bacterial sinusitis: reduces sinus inflammation by eliminating the infecting bacteria.
• Acute bacterial exacerbations of chronic bronchitis: controls bacterial load and alleviates worsening cough and sputum production.
• Skin and soft tissue infections: achieves bacterial clearance in cellulitis, abscesses and wound infections.
• Complicated intra‑abdominal infections: provides effective coverage against mixed aerobic and anaerobic organisms.

• Moxifloxacin 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 breaks, leading to bacterial cell death and a bactericidal effect against susceptible Gram‑positive and Gram‑negative organisms.

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

Common Side Effects

• Nausea: mild gastrointestinal upset.
• Diarrhea: loose stools, often self‑limiting.
• Headache: transient cranial discomfort.
• Dizziness: occasional vertiginous sensations.
• Rash: mild skin erythema or pruritus.
• Elevated liver enzymes: transient hepatic enzyme changes.

Serious or Rare Side Effects

• Tendon rupture: especially Achilles tendon, requiring immediate medical attention.
• QT interval prolongation: may precipitate cardiac arrhythmias.
• Severe hypersensitivity: including Stevens‑Johnson syndrome.
• Clostridioides difficile colitis: severe diarrhea with pseudomembranous colitis.
• Peripheral neuropathy: persistent numbness or tingling.
• Hepatotoxicity: significant liver injury with jaundice.

Moxifloxacin should be used with caution and under professional supervision.

• Renal impairment: adjust therapy based on renal function.
• Hepatic disease: monitor liver function tests during treatment.
• Cardiac risk: avoid in patients with known QT prolongation or electrolyte disturbances.
• Tendon disorders: discontinue if tendon pain or swelling occurs.
• Pregnancy and lactation: use only if the potential benefit outweighs the risk.
• Store at ambient temperature: keep below 25 °C, in the original container, protected from moisture and light.

Moxifloxacin can interact with several medicines, altering efficacy or safety.

Major Interactions (Avoid)

• Antacids containing aluminum or magnesium: reduce absorption of moxifloxacin.
• NSAIDs (e.g., ibuprofen, diclofenac): increase risk of central nervous system stimulation.
• QT‑prolonging agents (e.g., quinidine, macrolides): may cause serious cardiac arrhythmias.

Moderate Interactions (Monitor Closely)

• Warfarin: may enhance anticoagulant effect, requiring INR monitoring.
• Corticosteroids: increase risk of tendon rupture.
• Theophylline: may raise serum theophylline levels, necessitating dosage adjustment.