Nolicin-S (Norfloxacin)

Nolicin‑S (norfloxacin) is indicated for bacterial infections affecting the urinary, prostate and gastrointestinal tracts.

• Urinary tract infection: eradicates susceptible uropathogens and resolves symptoms such as dysuria and frequency.
• Prostatitis: reduces bacterial load in the prostate and alleviates inflammatory signs.
• Gastrointestinal infection: treats infections caused by susceptible enteric bacteria, improving gastrointestinal symptoms.

• Norfloxacin exerts its antibacterial activity by binding to the bacterial enzymes DNA gyrase (topoisomerase II) and topoisomerase IV. Inhibition of these enzymes prevents the supercoiling and separation of DNA strands required for replication and transcription, leading to bactericidal effects against a broad spectrum of Gram‑negative and some Gram‑positive organisms. The drug penetrates tissues and achieves concentrations above the minimum inhibitory concentration at infection sites, enhancing its clinical efficacy.

Nolicin‑S may cause a range of adverse reactions, which are classified by frequency and severity.

Common Side Effects

• Nausea: mild gastrointestinal upset.
• Diarrhea: loose stools, usually self‑limiting.
• Headache: transient cranial discomfort.
• Dizziness: occasional vertigo or light‑headedness.
• Photosensitivity: increased skin sensitivity to sunlight.
• Rash: mild skin eruption.

Serious or Rare Side Effects

• Tendon rupture: risk of Achilles or other tendon tears, especially in older patients.
• QT prolongation: potential cardiac arrhythmia requiring monitoring.
• Severe allergic reaction: anaphylaxis, angioedema, or Stevens‑Johnson syndrome.
• Elevated liver enzymes: possible hepatic enzyme elevation indicating liver stress.

Before prescribing Nolicin‑S, clinicians should consider several precautionary measures to ensure safe use.

• Renal function: assess kidney function and adjust dose in impairment.
• Hepatic function: monitor liver enzymes in patients with liver disease.
• Age: use with caution in elderly patients due to increased tendon risk.
• Concomitant fluoroquinolones: avoid combined use to prevent additive toxicity.
• Phototoxicity: advise patients to limit sun exposure and use sunscreen.
• Store at ambient temperature: keep below 25 °C in original packaging, protect from moisture.

Nolicin‑S can interact with other medicines, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Antacids containing aluminum or magnesium: reduce absorption of norfloxacin.
• Warfarin: may increase anticoagulant effect and bleeding risk.
• NSAIDs (e.g., ibuprofen, naproxen): increase risk of central nervous system stimulation and seizures.

Moderate Interactions (Monitor Closely)

• Corticosteroids: heightened risk of tendon rupture.
• Cyclosporine: may increase norfloxacin plasma levels.
• Theophylline: potential for increased stimulation and seizures.