Healthy Inc > Blog > Fluoroquinolone manufacturer India
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What is Norfloxacin 400mg used for?

In the pharmaceutical industry, Norfloxacin 400 mg is a synthetic, broad-spectrum antibacterial agent belonging to the fluoroquinolone class. As a pharmacist and manufacturer, I view Norfloxacin as the “standard-bearer” for urinary tract infections. It was the first of the fluoroquinolones to gain widespread clinical use and remains a high-volume product in international trade.

Primary Clinical Uses

  • Urinary Tract Infections (UTIs): It is primarily indicated for complicated and uncomplicated UTIs (cystitis, pyelitis, cystopyelitis) caused by susceptible bacteria like E. coli, Klebsiella, and Proteus.

  • Prostatic Infections: Treatment of chronic bacterial prostatitis.

  • Infectious Diarrhea: Effective against enterotoxigenic E. coli and other pathogens causing “traveler’s diarrhea” or gastroenteritis.

  • Gonorrhea: Traditionally used for uncomplicated urethral and cervical gonorrhea, though local resistance patterns should be monitored.

  • Prophylaxis in Neutropenic Patients: Used to prevent bacterial infections in patients with compromised immune systems.

Mechanism of Action: Inhibiting DNA Replication

Norfloxacin is bactericidal. It targets the “machinery” that bacteria use to replicate their genetic material.

Enzyme Targeting: It inhibits bacterial DNA gyrase (Topoisomerase II) and Topoisomerase IV.

Supercoiling Interference: These enzymes are essential for the supercoiling, uncoiling, and repair of bacterial DNA.

DNA Fragmentation: By blocking these enzymes, Norfloxacin causes the DNA to become unstable and break, preventing the bacteria from multiplying and leading to rapid cell death.

The Manufacturer’s Perspective: Formulation & Export

From a production and global trade standpoint at our WHO-GMP facility, Norfloxacin 400 mg involves specific technical considerations:

  • Bioavailability & Absorption: Norfloxacin is best taken on an empty stomach (1 hour before or 2 hours after a meal) for maximum absorption. As a manufacturer, ensuring this is clear in the Product Information Leaflet (PIL) is a professional priority.

  • Photosensitivity: Like all quinolones, Norfloxacin is light-sensitive. We utilize opaque PVC/PVDC or Alu-Alu blister packaging to ensure a 36-month shelf life, especially for export to Zone IVb regions.

  • Chelation Warning: Norfloxacin binds with multivalent ions (like Calcium, Aluminum, or Iron in antacids/supplements), which significantly reduces its absorption. Highlighting this “drug-mineral interaction” is a key technical USP for your digital platform.

  • B2B & Dossier Support: This is a staple for government tenders and institutional supplies. Our Mumbai facility provides full CTD/eCTD Dossiers to support international registration against the innovator (Noroxin).

 

Norfloxacin Tablets

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What is Levofloxacin 750mg used for?

In the pharmaceutical industry, Levofloxacin 750 mg is a high-potency, third-generation fluoroquinolone antibiotic. As a pharmacist and manufacturer, I view the 750 mg strength as the “intensive care” oral dose. It is designed to achieve high peak plasma concentrations (), allowing for a shorter, more aggressive treatment course (typically 5 days) compared to the traditional 10–14 day regimens of lower strengths.

Primary Clinical Uses

  • Pneumonia: Highly effective against both community-acquired pneumonia (CAP) and healthcare-associated pneumonia, including “atypical” pathogens.

  • Acute Bacterial Sinusitis: Used when first-line antibiotics have failed or when the infection is particularly severe.

  • Complicated Urinary Tract Infections (cUTI): Including acute pyelonephritis (kidney infection).

  • Skin and Soft Tissue Infections: Indicated for complicated infections where deep tissue penetration is required.

  • Chronic Bacterial Prostatitis: Levofloxacin is preferred here due to its excellent penetration into prostatic fluid.

Mechanism of Action: DNA Fragmentation

Levofloxacin is a bactericidal agent that disrupts the vital machinery of the bacterial cell.

Enzyme Inhibition: It targets two essential enzymes: DNA gyrase (Topoisomerase II) and Topoisomerase IV.

Supercoiling Disruption: These enzymes are responsible for uncoiling and re-sealing bacterial DNA during replication. By blocking them, Levofloxacin causes the DNA strands to break.

Cell Death: The bacteria can no longer replicate its genetic material or synthesize proteins, leading to rapid cell death.

The Manufacturer’s Perspective: Formulation & Export

From a production and global trade standpoint, Levofloxacin 750 mg is a technically demanding product:

  • Pharmacokinetics (): The 750 mg dose is specifically formulated to be “concentration-dependent.” As a firm owner, you should know that achieving bioequivalence against the innovator (Levaquin) requires precise control over the dissolution rate to ensure rapid absorption.

  • Photosensitivity: Levofloxacin is sensitive to light. At our WHO-GMP facility, we utilize opaque PVC/PVDC or Alu-Alu blister packaging to ensure a 36-month shelf life, especially for export to Zone IVb regions.

  • Dossier & Regulatory Support: This is a high-value antibiotic for hospital supply. We provide full CTD/eCTD Dossiers to support international registration and B2B tender participation.

  • Safety Monitoring: As a pharmacist, you must ensure your labeling includes the FDA “Black Box Warning” regarding tendonitis and tendon rupture, which is a critical regulatory requirement for fluoroquinolones.

Levofloxacin Tablets

 

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