Geenor 400 Tablet

Geenor 400 Tablet is a prescription medicine that combines an antibiotic with a probiotic to support the treatment of certain bacterial infections while helping maintain gut flora balance. It is used for the management of some bacterial infections, including some cases of urinary tract infections and gastrointestinal infections, based on physician evaluation and local antibiotic sensitivity patterns.

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Written by: Syed Jommy Abbas, B. Pharma

Reviewed by: Dr. Devika Rani, MBBS

Last updated on: 03-06-2026

Geenor 400 Tablet

Grecian Pvt. Ltd.

Strip of 10 tablets
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WHO GMP Certified

Long Expiry (>8 Months)

15 Days Easy Returns

General Information

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Genuine Medicine

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More About Geenor 400 Tablet

Detailed Description

Geenor 400 Tablet is a prescription medicine used for the treatment of certain bacterial infections, while also helping support normal intestinal flora during antibiotic therapy.

It is used in some cases of Urinary tract infection and Gastrointestinal infection, based on clinical evaluation and local bacterial resistance patterns. It is not effective against viral infections.

Norfloxacin works by inhibiting bacterial DNA replication, thereby preventing bacterial multiplication and helping control the infection. Lactobacillus helps restore normal gut flora, which may be disrupted during antibiotic treatment, and may reduce the risk of digestive imbalance.

Geenor 400 Tablet should be taken exactly as prescribed by a doctor. The full course should be completed even if symptoms improve earlier, to reduce the risk of incomplete treatment or recurrence.

Uses of Geenor 400 Tablet

Geenor 400 Tablet may be indicated by your doctor for:

Gastrointestinal Infections

Treating infectious diarrhea, gastroenteritis, and bacterial dysentery caused by susceptible organisms.

Urinary Tract Infections (UTIs)

Managing bacterial infections of the bladder and kidneys when local sensitivity tests show the bacteria are responsive.

Gut Flora Support

Helping to maintain a balanced intestinal environment during antibiotic therapy to prevent severe loose stools.

Benefits of Geenor 400 Tablet

Geenor 400 Tablet may provide benefits such as:

  • Clears Bacterial Infections: Helps eliminate harmful bacteria from the body, which helps manage symptoms like fever, pain, and frequent toilet visits.
  • Protects the Bowels: The addition of lactobacillus may help reduce the risk of secondary stomach upset, bloating, and diarrhea that often come with antibiotic treatment.
  • Improves Digestive Recovery: Supports the gut lining by maintaining normal acidity levels, making it harder for unwanted germs to grow back.

Side Effects of Geenor 400 Tablet

Common side effects of Geenor 400 Tablet may include
  • Nausea: A mild feeling of stomach discomfort, especially after taking the medicine.
  • Heartburn: A burning sensation in the upper stomach or chest.
  • Abdominal discomfort: Mild pain, cramps, or gas.
  • Dizziness: A brief feeling of lightheadedness or imbalance.
Uncommon side effects of Geenor 400 Tablet may include
  • Headache: Mild and self-limiting pain in the head.
  • Skin rash: Mild itching or red skin spots.
  • Increased sensitivity to sunlight: Skin may burn more easily with sun exposure.
Serious side effects that require medical attention may include
  • Tendon rupture or tendonitis: Pain, swelling, or sudden injury in a tendon, often in the heel or ankle.
  • Severe allergic reaction: Swelling of the face, lips, or throat, severe rash, or breathing difficulty.
  • Severe diarrhea: Watery or bloody diarrhea with fever or abdominal cramps, which may indicate a serious gut infection.
  • Nerve-related symptoms: Persistent tingling, burning, or numbness in the hands or feet.

Consult your doctor if you experience any unusual, severe, or persistent symptoms while using Geenor 400 Tablet.

Directions for Use

  • Take Geenor 400 Tablet exactly as advised by your doctor or as mentioned on the product label. Do not change the dose on your own.
  • Swallow the tablet whole with a full glass of water. Do not crush, chew, or break it.
  • It is usually better to take this medicine on an empty stomach, either 1 hour before or 2 hours after a meal, because food can lower the amount of medicine your body absorbs. If it causes severe stomach upset, ask your doctor if you can take it with a light, dairy-free snack.
  • Drink plenty of water throughout the day while taking this medicine. This helps protect your kidneys and prevents the medicine from forming crystals in your urine.
  • Keep a gap of at least 2 hours between taking this tablet and consuming dairy products (like milk or yogurt), antacids, or supplements containing calcium, iron, or zinc, as these items stop the antibiotic from absorbing properly.
  • Finish the complete course prescribed by your doctor, even if your symptoms improve after a couple of days.

How it works

Geenor 400 Tablet helps clear infections and protect the stomach through two distinct actions.

Norfloxacin belongs to a group of medicines called fluoroquinolone antibiotics. It works by blocking bacterial DNA replication. Specifically, it stops internal enzymes known as DNA gyrase and topoisomerase IV from doing their jobs. Without these enzymes, bacteria cannot repair or copy their genetic material, which causes the bacterial cells to die off.

Lactobacillus is a type of probiotic bacterium. It passes safely through the stomach acid into the intestines, where it multiplies and produces lactic acid. This action lowers the pH level in the bowel, creating an acidic environment that helps restore normal intestinal flora. This balanced environment protects the digestive tract and stops harmful, gas-producing germs from multiplying.

Safety Advice for Geenor 400 Tablet

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Allergy
Unsafe

Geenor 400 Tablet should not be used in patients with known allergy to norfloxacin, quinolone antibiotics, lactobacillus preparations, or any ingredient in the formulation. Seek immediate medical attention if rash, swelling, or breathing difficulty occurs.

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Breastfeeding
Caution

Norfloxacin may pass into breast milk in small amounts. Geenor 400 Tablet should be used during breastfeeding only if prescribed by a doctor after assessing potential risks and benefits.

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Pregnancy
Caution

Geenor 400 Tablet is generally not recommended during pregnancy unless clearly needed. Quinolone antibiotics may affect developing joints and cartilage in the baby.

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Driving
Caution

Geenor 400 Tablet may cause dizziness, headache, or reduced alertness in some individuals. Avoid driving or operating machinery if these symptoms occur.

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Alcohol
Caution

Alcohol may worsen dizziness or stomach irritation associated with Geenor 400 Tablet. Limiting alcohol intake during treatment is advisable.

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Liver
Caution

Patients with liver disease should use Geenor 400 Tablet cautiously, as norfloxacin may occasionally affect liver function. Medical supervision may be required during treatment.

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Kidney
Caution

Norfloxacin is removed through the kidneys, and dose adjustment may be needed in patients with kidney impairment to reduce the risk of side effects.

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Children
Unsafe

Geenor 400 Tablet is generally not recommended in children unless specifically prescribed by a doctor, as quinolone antibiotics may affect joint and cartilage development.

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Elderly patients
Caution

Older adults may be more sensitive to side effects such as tendon problems, dizziness, irregular heartbeat, or kidney-related complications during treatment with Geenor 400 Tablet.

Quick Tips for Geenor 400 Tablet

  • Take Geenor 400 Tablet exactly as prescribed and complete the full course, even if you start feeling better earlier. Incomplete treatment may increase the risk of the infection returning.
  • Avoid taking Geenor 400 Tablet at the same time as antacids, iron supplements, zinc products, or calcium-rich products, as these may reduce the absorption of norfloxacin.
  • Take doses at evenly spaced intervals to help maintain consistent antibacterial activity.
  • Mild stomach upset or loose stools can occur in some patients. Contact your doctor if you develop severe diarrhoea, persistent abdominal pain, or blood in the stool.
  • Avoid unnecessary exposure to direct sunlight or tanning lamps during treatment, as norfloxacin may increase photosensitivity in some patients.
  • Inform your doctor promptly if you develop tendon pain, swelling, numbness, or tingling sensations while taking Geenor 400 Tablet.

Storage Advice

  • Store Geenor 400 Tablet in a cool, dry place, ideally at room temperature below 30°C.
  • Keep the tablets inside their original packaging strip to protect them from direct light and moisture.
  • Do not store this medication in highly humid environments, such as a bathroom shelf or near a kitchen sink.
  • Keep it securely out of the sight and reach of children.

Drug-Food Interaction

  • Dairy Products and Calcium-Fortified Drinks (Caution): Milk, cheese, yogurt, and calcium-rich juices can severely decrease the absorption of norfloxacin if consumed at the same time. Space them out by at least 2 hours.
  • Caffeine (Caution): This medicine can cause your body to process caffeine much more slowly than normal. This can sometimes lead to feelings of anxiety, a fast heartbeat, or trouble sleeping if you drink coffee, tea, or energy drinks.

Interactions with Other Drugs

  • Antacids and Mineral Supplements (Caution): Medicines for acidity containing magnesium or aluminum, as well as iron and zinc pills, can block norfloxacin from absorbing. Take your Geenor 400 Tablet tablet 2 hours before or 2 hours after these items.
  • Blood Thinners (Warfarin) (Caution): Norfloxacin can increase the effect of blood thinners, which can sometimes lead to an increased risk of bruising or bleeding. Your doctor may check your clotting levels regularly.
  • Theophylline (Caution): Taking this medicine alongside theophylline (a lung medicine) can cause the theophylline levels to rise dangerously high, increasing the risk of side effects like nausea or seizures.
  • Pain Relievers (NSAIDs) (Caution): Combining fluoroquinolone antibiotics with pain medicines like ibuprofen, naproxen, or diclofenac can stimulate the brain and can sometimes lead to an increased risk of seizures.

Drug-Disease Interactions

  • Myasthenia Gravis (Unsafe): This medicine can worsen severe muscle weakness and should be avoided if you have this neuromuscular condition.
  • Seizure Disorders or Epilepsy (Caution): Norfloxacin can affect the central nervous system. Use it carefully if you have a history of seizures, strokes, or brain injuries.
  • Heart Rhythm Issues (QT Prolongation) (Caution): This antibiotic can alter heart electrical patterns in sensitive individuals. Talk to your doctor if you have an irregular heartbeat or low potassium.
  • History of Tendonitis (Caution): If you have previously injured your tendons, this medicine can increase the risk of structural re-injury or a tendon tear.

What If You Forget to take Geenor 400 Tablet?

If you miss a dose of Geenor 400 Tablet, take it as soon as you remember. However, if your next scheduled dose is only a few hours away, skip the missed dose and continue with your regular routine.

Do not take two doses at once to make up for a missed tablet, as this can lead to an increased risk of neurological or stomach side effects.

FAQ

Fact Box

Therapeutic Class

Prescription Antibiotic with Probiotic Support

Action Class

Bacterial DNA Replication Inhibitor and Gut Microbiome Replenisher

Chemical Class

Fluoroquinolone Antimicrobial + Beneficial Bacterial Spores

Habit Forming

No

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