a flox or 200mg/500mg tablet - Ofloxacin (200mg) + Ornidazole (500mg) medicine

Ofloxacin 200mg: Comprehensive Guide

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🏭 Parul Health Care Private Limited 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 23, 2026
⚠️ Nephrotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Reviewed by
SaathiMed Expert Panel | Sep 23, 2026

What is a flox or 200mg/500mg tablet used for?

Ofloxacin is a fluoroquinolone antibiotic used to treat bacterial infections such as urinary tract infections, pneumonia, and gonorrhea. It works by inhibiting bacterial DNA replication. Common side effects include nausea, diarrhea, and headache. Serious risks include tendon damage and QT prolongation. Take as prescribed, avoid dairy and antacids within 2 hours.

  • Generic Name: Ofloxacin (200mg) + Ornidazole (500mg)
  • Manufacturer: Parul Health Care Private Limited
  • Form: Allopathy
  • Pregnancy Category: Category C
  • Prescription Required: Yes
💡 Did You Know? Over 80% of the antiretroviral drugs used globally to combat AIDS are supplied by Indian pharmaceutical companies.

💊 a flox or 200mg/500mg tablet Uses & Benefits

  • Ofloxacin is primarily used to treat bacterial infections including community-acquired pneumonia, acute exacerbations of chronic bronchitis, uncomplicated and complicated urinary tract infections, prostatitis, skin and soft tissue infections, and sexually transmitted infections such as gonorrhea and chlamydia.
  • It is also used for gastrointestinal infections like traveler's diarrhea and typhoid fever.
  • Ofloxacin is effective against a broad spectrum of bacteria, including Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, and Streptococcus pneumoniae.

Off-label uses: Off-label uses of ofloxacin include treatment of tuberculosis (as part of multidrug regimens), leprosy, and some mycobacterial infections. It may also be used for chronic osteomyelitis and prophylaxis in neutropenic patients. However, these uses are not FDA-approved and should be based on expert guidelines.

Primary treatment for: Bacterial infections

Also treats: Urinary tract infections, Respiratory tract infections, Skin and soft tissue infections, Sexually transmitted infections

📋 Drug Information

Generic Name(s)Ofloxacin (200mg) + Ornidazole (500mg)
Brand Namea flox or 200mg/500mg tablet
ManufacturerParul Health Care Private Limited
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassAntibiotic
Action ClassFluoroquinolone
Route of AdministrationOral
StorageStore at room temperature (20-25°C), protect from light and moisture.
Shelf Life2-3 years (check label)
WHO GuidelineWHO Model List of Essential Medicines: Ofloxacin is included for treatment of gonorrhea and other infections.
ICMR GuidelineICMR guidelines recommend ofloxacin for treatment of uncomplicated typhoid fever and urinary tract infections.

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionOfloxacin is rapidly and well absorbed after oral administration, with bioavailability >95%. Food does not significantly affect absorption.
DistributionOfloxacin is widely distributed into body tissues and fluids, including lung, kidney, prostate, bile, and cerebrospinal fluid (with inflamed meninges). Volume of distribution is approximately 1.5-2.5 L/kg.
Protein Binding20-25%
MetabolismOfloxacin is minimally metabolized in the liver; approximately 5% is metabolized to desmethyl ofloxacin and ofloxacin N-oxide.
Half-Life4-5 hours (prolonged in renal impairment)
ExcretionPrimarily excreted unchanged in urine (70-80%) via glomerular filtration and tubular secretion. A small amount is excreted in feces.
Bioavailability>95%
Onset of Action1-2 hours after oral administration
Peak Plasma Time1-2 hours
Duration of Action12 hours (due to post-antibiotic effect)

How It Works

Ofloxacin is a fluoroquinolone antibiotic that inhibits bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes required for DNA replication, transcription, repair, and recombination. By binding to these enzymes, ofloxacin prevents the supercoiling and uncoiling of bacterial DNA, leading to inhibition of DNA synthesis and bacterial cell death. This mechanism is bactericidal and effective against a wide range of Gram-positive and Gram-negative bacteria.

Mechanism Steps

1Ofloxacin enters bacterial cell through porin channels
2Binds to DNA gyrase and topoisomerase IV
3Inhibits DNA supercoiling and replication
4Leads to DNA damage and bacterial cell death

💡 How to Take a flox or 200mg/500mg tablet

1Take ofloxacin exactly as prescribed, usually twice daily.
2Swallow the tablet whole with a full glass of water.
3Take at least 2 hours before or after dairy products, antacids, or iron supplements.

Dosage Information

Adult Dosage200-400 mg twice daily for 7-14 days depending on infection severity and type.
Pediatric DosageNot recommended for children <18 years due to risk of arthropathy.
Elderly DosageNo specific adjustment except based on renal function; start at lower end of dosing range.
Renal ImpairmentCrCl 20-50 mL/min: 200-400 mg every 24 hours; CrCl <20 mL/min: 200 mg every 24 hours.
Hepatic ImpairmentNo adjustment required for mild to moderate hepatic impairment; use caution in severe impairment.
Maximum Daily Dose800 mg

Dosage Timeline

🌅 Morning ✅ ☀️ Afternoon ❌ 🌆 Evening ✅ 🌙 Night ❌

⚠️ Side Effects of a flox or 200mg/500mg tablet

✅ Common Side Effects

Nausea
Diarrhea
Headache
Dizziness
Insomnia
Abdominal pain
Vomiting
Dyspepsia
Rash
Vaginitis
Taste perversion

🚨 Serious Side Effects

Tendonitis
Tendon rupture
Peripheral neuropathy
Central nervous system effects (seizures, confusion)
QT prolongation
Severe hypersensitivity reactions (anaphylaxis, Stevens-Johnson syndrome)
Clostridium difficile-associated diarrhea
Aortic aneurysm/dissection

⚠️ Rare Side Effects

Photosensitivity
Hepatotoxicity
Nephrotoxicity
Blood dyscrasias (agranulocytosis, thrombocytopenia)
Pseudomembranous colitis
Torsades de pointes
Hypoglycemia

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Warfarin Major Increased anticoagulant effect and bleeding risk
Theophylline Major Increased theophylline levels, risk of toxicity
NSAIDs Major Increased risk of CNS stimulation and seizures
Antacids (Al/Mg) Moderate Reduced ofloxacin absorption
Sucralfate Moderate Reduced ofloxacin absorption
Iron supplements Moderate Reduced ofloxacin absorption
Caffeine Minor Increased caffeine levels, possible jitteriness

🚨 Major Interactions

  • Warfarin
  • Theophylline
  • Caffeine
  • Nonsteroidal anti-inflammatory drugs (NSAIDs)
  • Antidiabetic agents (sulfonylureas)
  • QT-prolonging agents (e.g., class IA/III antiarrhythmics)

⚡ Moderate Interactions

  • Cyclosporine
  • Methotrexate
  • Phenytoin
  • Probenecid
  • Oral anticoagulants

🍷 Alcohol Interaction

Alcohol may increase the risk of central nervous system side effects (dizziness, drowsiness). Avoid alcohol during treatment.

🛡️ Safety & Warnings

🚫 Contraindications

Hypersensitivity to ofloxacin or any fluoroquinolone; history of tendon disorders related to fluoroquinolone use; children and adolescents (

⚠️ Warnings & Precautions

Fluoroquinolones, including ofloxacin, have been associated with disabling and potentially irreversible serious adverse reactions such as tendonitis, tendon rupture, peripheral neuropathy, and CNS effects. Discontinue at first sign of tendon pain, swelling, or inflammation. Avoid in patients with a history of myasthenia gravis (may exacerbate muscle weakness). Use with caution in elderly, renal impairment (adjust dose), and those with known QT prolongation or electrolyte disturbances. Avoid excessive sunlight/UV exposure due to photosensitivity risk. Monitor for signs of Clostridium difficile-associated diarrhea. Use in children is not recommended due to arthropathy risk.

🤱 Lactation Safety

Ofloxacin is excreted in breast milk. Due to potential for serious adverse reactions in nursing infa

💊 Overdose Management

In case of overdose, symptomatic and supportive care is recommended. No specific antidote. Monitor ECG for QT prolongation, renal function, and CNS effects. Hemodialysis removes only a small amount of ofloxacin (10-20%).

⏰ Missed Dose

Take the missed dose as soon as you remember. If it is almost time for the next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose.

🔄 Substitutes for a flox or 200mg/500mg tablet

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Ofloxacin is safe for children with ear infections.
    Fact: Ofloxacin is not recommended for children due to risk of joint damage. Other antibiotics are preferred.
  • Myth: You can stop taking ofloxacin once symptoms improve.
    Fact: Always complete the full course to prevent resistance and recurrence.

🔄 Alternative Options

Generic Alternatives

  • Ofloxacin

Brand Alternatives

  • Zanocin
  • Oflox
  • Tarivid

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