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Radinor 400mg Tablet

Radinor 400mg Tablet is used to treat bacterial infections caused by susceptible bacteria. It is indicated in the treatment of urinary tract infections, prostatitis (prostate inflammation), and gonorrhoea (a sexually transmitted disease). Additionally, it is used to treat infections of the stomach and intestine, such as traveller's diarrhoea. It contains Norfloxacin, which kills the bacteria and treats bacterial infections. In some cases, it may cause common side effects such as abdominal cramps, nausea, diarrhoea, heartburn, headache, and dizziness. Before taking this medicine, you should tell your doctor if you are allergic to any of its components or if you are pregnant/breastfeeding, and about all the medications you are taking and any pre-existing medical conditions.

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Written By Santoshini Reddy G , M Pharmacy
Reviewed By Bayyarapu Mahesh Kumar , M Pharmacy
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More about the Product

Composition :

NORFLOXACIN-400MG

Consume Type :

Oral

Expires on or after :

Dec-28

Return Policy :

Not Returnable

About Radinor 400mg Tablet

Radinor 400mg Tablet is used to treat bacterial infections such as urinary tract infections, prostatitis (prostate inflammation), and gonorrhoea (a sexually transmitted disease). Additionally, Radinor 400mg Tablet is used to treat infections of the stomach and intestine, such as traveler’s diarrhoea.

Radinor 400mg Tablet contains norfloxacin, which works by inhibiting the bacterial enzyme DNA gyrase, thereby preventing bacterial DNA replication and leading to the death of the bacteria.

Take Radinor 400mg Tablet as prescribed. In some cases, Radinor 400mg Tablet may cause common side effects such as abdominal cramps, nausea, diarrhoea, heartburn, headache, and dizziness. Most of these side effects do not require medical attention and will resolve gradually over time. However, you are advised to talk to your doctor if the side effects persist or worsen.

Take Radinor 400mg Tablet as prescribed. It can be taken 1 hour before food or 2 hours after food. Swallow the medicine as a whole with a glass of water. The dose and duration of medicine will be decided by the physician.

Before taking Radinor 400mg Tablet, inform your doctor if you are allergic to any of its ingredients or other fluoroquinolone antibiotics. Also, let your doctor know if you experience pain in tendons, swelling, or inflammation, as Radinor 400mg Tablet is associated with an increased risk of tendon rupture and tendonitis in those who have had a kidney, heart, or lung transplant.

Uses of Radinor 400mg Tablet

Radinor 400mg Tablet is used for the treatment of bacterial infections. The detailed uses of Radinor 400mg Tablet are as follows:

  • Urinary Tract Infections (UTIs): Radinor 400mg Tablet is an antibiotic used to treat complicated and uncomplicated urinary tract infections (UTIs) caused by certain bacteria.
  • Gastrointestinal Infections: Radinor 400mg Tablet can be used to treat infections of the stomach and intestine, such as traveller's diarrhoea.
  • Prostatitis: Radinor 400mg Tablet is also indicated for the treatment of prostatitis, an inflammation of the prostate gland often caused by bacterial infection.
  • Gynecological Infections: Radinor 400mg Tablet treats certain bacterial gynecological infections, especially those affecting the lower reproductive system, such as cervical and urethral gonorrhea caused by the bacteria Neisseria gonorrhoeae.

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Directions for Use

  • Radinor 400mg Tablet should be taken at least 1 hour before or 2 hours after a meal.
  • It is usually taken twice daily or as prescribed by your doctor.
  • Swallow Radinor 400mg Tablet as a whole with a glass of water.
  • Do not crush, chew, break, or open it.

Key Benefits

  • Radinor 400mg Tablet belongs to the group of medicines called quinolone antibiotics, used to treat bacterial infections.
  • Additionally, Radinor 400mg Tablet is also used to treat traveller’s diarrhoea.
  • Radinor 400mg Tablet is bactericidal in nature. It works by inhibiting the synthesis of bacterial DNA gyrase, thereby preventing the bacteria from repairing and multiplying, and ultimately killing them and treating infections.
  • Radinor 400mg Tablet is a broad-spectrum antibiotic effective against a wide range of gram-positive and gram-negative bacteria.

How Radinor 400mg Tablet Works

Radinor 400mg Tablet contains Norfloxacin, which inhibits the synthesis of an enzyme called DNA gyrase, thereby killing the bacteria and treating bacterial infections. Radinor 400mg Tablet has broad-spectrum antibacterial activity against both Gram-positive and Gram-negative bacteria.

Storage

Store in a cool and dry place away from sunlight
Side effects of Radinor 400mg Tablet
Here are the 7 steps to manage Dizziness caused by medication:
  • Inform your doctor about dizziness symptoms. They may adjust your medication regimen or prescribe additional medications to manage symptoms.
  • Follow your doctor's instructions for taking medication, and take it at the same time every day to minimize dizziness.
  • When standing up, do so slowly and carefully to avoid sudden dizziness.
  • Avoid making sudden movements, such as turning or bending quickly, which can exacerbate dizziness.
  • Drink plenty of water throughout the day to stay hydrated and help alleviate dizziness symptoms.
  • If you're feeling dizzy, sit or lie down and rest until the dizziness passes.
  • Track when dizziness occurs and any factors that may trigger it, and share this information with your doctor to help manage symptoms.
Overcome Medication-Induced Nausea: A 9-Step Plan
  • Inform your doctor about the nausea and discuss possible alternatives to the medication or adjustments to the dosage.
  • Divide your daily food intake into smaller, more frequent meals to reduce nausea.
  • Opt for bland, easily digestible foods like crackers, toast, plain rice, bananas, and applesauce.
  • Avoid certain foods that can trigger nausea, such as fatty, greasy, spicy, and smelly foods.
  • Drink plenty of fluids, such as water, clear broth, or electrolyte-rich beverages like coconut water or sports drinks.
  • Use ginger (tea, ale, or candies) to help relieve nausea.
  • Get adequate rest and also avoid strenuous activities that can worsen nausea.
  • Talk to your doctor about taking anti-nausea medication if your nausea is severe.
  • Record when your nausea occurs, what triggers it, and what provides relief to help you identify patterns and manage your symptoms more effectively.
Dealing with Medication-Induced Headache:
  • Hydrate your body: Drink enough water to prevent dehydration and headaches.
  • Calm Your Mind: Deep breathing and meditation can help you relax and relieve stress.
  • Rest and Recharge: Sleep for 7-8 hours to reduce headache triggers.
  • Take rest: lie down in a quiet, dark environment.
  • Cold or warm compresses can help reduce tension.
  • Stay Upright: Maintain good posture to keep symptoms from getting worse.
  • To treat headaches naturally, try acupuncture or massage therapy.
  • Over-the-counter pain relievers include acetaminophen and ibuprofen.
  • Prescription Assistance: Speak with your doctor about more substantial drug alternatives.
  • Severe Headaches: Seek emergency medical assistance for sudden, severe headaches.
  • Frequent Headaches: If you get reoccurring headaches, consult your doctor.
  • Headaches with Symptoms: Seek medical attention if your headaches include fever, disorientation, or weakness.
  • Drink water or other clear fluids.
  • To prevent worsening of pain, limit intake of tea, coffee, or alcohol.
  • Include bland foods like rice, toast, crackers, and rice in your diet.
  • Avoid lying down immediately after eating as it may cause indigestion or heartburn.
  • Avoid acidic and spicy food as it may cause indigestion.
  • Rest well; get enough sleep.
  • Eat a balanced diet and drink enough water.
  • Manage stress with yoga and meditation.
  • Limit alcohol and caffeine.
  • Physical activities like walking or jogging might help boost energy and make you feel less tired.
Here are the precise steps to cope with diarrhoea caused by medication usage:
  • Inform Your Doctor: Notify your doctor immediately about your diarrhoea symptoms. This allows them to adjust your medication or provide guidance on managing side effects.
  • Stay Hydrated: Drink plenty of fluids to replace lost water and electrolytes. Choose water, clear broth, and electrolyte-rich drinks. Avoid carbonated or caffeinated beverages to effectively rehydrate your body.
  • Follow a Bland Diet: Eat easy-to-digest foods to help firm up your stool and settle your stomach. Try incorporating bananas, rice, applesauce, toast, plain crackers, and boiled vegetables into your diet.
  • Avoid Trigger Foods: Steer clear of foods that can worsen diarrhoea, such as spicy, fatty, or greasy foods, high-fibre foods, and dairy products (especially if you're lactose intolerant).
  • Practice Good Hygiene: Maintain good hygiene to prevent the spread of infection. To stay healthy, wash your hands frequently, clean and disinfect surfaces regularly, and avoid exchanging personal belongings with others.
  • Take Anti-Diarrheal Medications: If your doctor advises, anti-diarrheal medications such as loperamide might help manage diarrhoea symptoms. Always follow your doctor's directions.
  • Keep track of your diarrhoea symptoms. If they don't get better or worse or are accompanied by severe stomach pain, blood, or dehydration signs (like extreme thirst or dark urine), seek medical help.

What if I have taken an overdose of Radinor 400mg Tablet

Do not take more than the prescribed dose of Radinor 400mg Tablet, as it may cause serious side effects. If you suspect you have taken an overdose, please consult a doctor immediately.

Drug Warnings

  • Do not take Radinor 400mg Tablet if you are allergic to any of its ingredients
  • Also, inform your doctor if you have experienced swelling or tendon tearing while taking quinolone antibiotics.
  • Radinor 400mg Tablet is associated with an increased risk of tendonitis and tendon rupture in all age groups; this risk is higher in patients over 60 years old, those taking corticosteroids, or those who have had kidney, heart, or lung transplants.
  • Consult your doctor immediately if you experience tendon pain, swelling, or inflammation while taking Radinor 400mg Tablet.
  • Do not take Radinor 400mg Tablet if you have myasthenia gravis, as it may cause increased muscle weakness.
  • Talk to your doctor if you have epilepsy, low potassium levels, nervous or muscle disorders, head injury or brain tumour, diabetes, rheumatoid arthritis, or heart, kidney, or liver problems.
  • Consult your doctor if you are pregnant, planning to become pregnant, or breastfeeding before taking Radinor 400mg Tablet.
  • Avoid alcohol consumption while taking Radinor 400mg Tablet, as it may increase dizziness.
  • Radinor 400mg Tablet may cause dizziness and vision problems, so avoid driving or operating machinery until you are fully alert.

Drug-Drug Interactions

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NorfloxacinBepridil
Critical
NorfloxacinAmiodarone
Critical

Drug-Drug Interactions

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NorfloxacinBepridil
Critical
How does the drug interact with Radinor 400mg Tablet:
Using bepridil together with Radinor 400mg Tablet can increase the risk of an irregular heart rhythm that may be serious.

How to manage the interaction:
Taking Radinor 400mg Tablet with Bepridil is not recommended, please consult your doctor before taking it. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, or a fast or pounding heartbeat. Do not stop using any medications without talking to a doctor.
NorfloxacinAmiodarone
Critical
How does the drug interact with Radinor 400mg Tablet:
The combination of Amiodarone and Radinor 400mg Tablet may significantly raise the risk of an abnormal heart rhythm.

How to manage the interaction:
Despite the fact that Amiodarone and Radinor 400mg Tablet interact, it can be taken if prescribed by a doctor. If you get dizziness, lightheadedness, fainting, or fast or racing heartbeats, consult a doctor. Do not stop taking any medications without visiting a doctor.
NorfloxacinSotalol
Critical
How does the drug interact with Radinor 400mg Tablet:
Coadministration of Radinor 400mg Tablet with Sotalol can increase the risk or severity of irregular heart rhythm.

How to manage the interaction:
Taking Radinor 400mg Tablet with Sotalol together is generally avoided as it can result in an interaction, it can be taken if a doctor has advised it. However, contact a doctor immediately if you experience sudden dizziness, lightheadedness, fainting, shortness of breath, chest pain or tightness, rapid heartbeat, or memory loss. Do not discontinue any medications without consulting a doctor.
NorfloxacinMesoridazine
Critical
How does the drug interact with Radinor 400mg Tablet:
Using Mesoridazine together with Radinor 400mg Tablet can increase the risk of an irregular heart rhythm that may be serious.

How to manage the interaction:
Taking Mesoridazine with Radinor 400mg Tablet is not recommended, please consult your doctor before taking it. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, shortness of breath, or heart palpitations. Do not stop using any medications without talking to a doctor.
NorfloxacinDisopyramide
Critical
How does the drug interact with Radinor 400mg Tablet:
Coadministration of Radinor 400mg Tablet with Disopyramide can increase the risk of irregular heart rhythm.

How to manage the interaction:
Taking Radinor 400mg Tablet with Disopyramide together can result in an interaction, it can be taken if your doctor has advised it. However, contact a doctor immediately if you experience sudden dizziness, lightheadedness, fainting, shortness of breath, chest pain or tightness, rapid heartbeat, or memory loss. Do not discontinue any medications without consulting a doctor.
NorfloxacinCisapride
Critical
How does the drug interact with Radinor 400mg Tablet:
Coadministration of Radinor 400mg Tablet with Cisapride can increase the risk or severity of irregular heart rhythm.

How to manage the interaction:
Taking Radinor 400mg Tablet with Cisapride together can result in an interaction, it can be taken if your doctor has advised it. However, contact a doctor immediately if you experience sudden dizziness, lightheadedness, fainting, shortness of breath, chest pain or tightness, rapid heartbeat, or memory loss. Do not discontinue any medications without consulting a doctor.
NorfloxacinGlibenclamide
Severe
How does the drug interact with Radinor 400mg Tablet:
Co-administration of Radinor 400mg Tablet with Glibenclamide may sometimes affect blood glucose levels. Both high blood glucose and, less frequently, low blood glucose have been reported.

How to manage the interaction:
Although there is a possible interaction, Glibenclamide can be taken with Radinor 400mg Tablet if prescribed by the doctor. Consult the prescriber if you experience symptoms of low blood sugar such as nervousness, confusion, headache, dizziness, drowsiness, tremor, nausea, hunger, weakness, perspiration, palpitation, and rapid heartbeat or symptoms of high blood sugar such as increased urination, increased thirst, and increased hunger. Maintaining blood glucose levels is advised. Do not discontinue any medications without consulting a doctor.
NorfloxacinDronedarone
Severe
How does the drug interact with Radinor 400mg Tablet:
Coadministration of Radinor 400mg Tablet with Dronedarone can increase the risk or severity of irregular heart rhythm.

How to manage the interaction:
Taking Radinor 400mg Tablet with Dronedarone together can result in an interaction, it can be taken if your doctor has advised it. However, if you experience sudden dizziness, lightheadedness, fainting, shortness of breath, chest pain or tightness, rapid heartbeat, or memory loss, contact a doctor immediately. Do not discontinue any medications without consulting a doctor.
NorfloxacinFludrocortisone
Severe
How does the drug interact with Radinor 400mg Tablet:
Co-administration of Radinor 400mg Tablet with Fludrocortisone can increase the risk or severity of tendinitis (inflammation of the tendons attached to the muscle and bones). The risk is increased in the elderly and patients with a history of kidney, heart, and/or lung transplant.

How to manage the interaction:
Taking Radinor 400mg Tablet with Fludrocortisone together can result in an interaction, it can be taken if your doctor has advised it. However, if you experience Stiff joints, joint pains, or swelling contact a doctor immediately. Do not discontinue any medications without consulting a doctor.
NorfloxacinMethylprednisolone
Severe
How does the drug interact with Radinor 400mg Tablet:
Co-administration of Radinor 400mg Tablet with Methylprednisolone can increase the risk or severity of tendinitis (inflammation of the tendons attached to the muscle and bones).

How to manage the interaction:
Taking Radinor 400mg Tablet with Methylprednisolone together can result in an interaction, it can be taken if a doctor has advised it. However, if you experience any symptoms such as Stiff joints or difficulty moving your joints, joint pains, Swelling, or skin discoloration, contact a doctor immediately. Do not discontinue any medications without consulting a doctor.

Drug-Food Interactions

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NORFLOXACIN-400MGCaffeine containing foods/drinks, Fruit juices
Moderate

Drug-Food Interactions

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NORFLOXACIN-400MGCaffeine containing foods/drinks, Fruit juices
Moderate
Common Foods to Avoid:
Cocoa, Coffee, Dark Chocolate, Energy Drinks With Caffeine, Green Tea, Kola Nut, Tea, Tiramisu, Orange Juice

How to manage the interaction:
Consuming dairy products, cereal, or orange juice with Radinor 400mg Tablet can interfere with its absorption and reduce its levels in the blood and urinary tract. Using caffeine together with Radinor 400mg Tablet may increase the effects of caffeine. Radinor 400mg Tablet dose should be taken at least one hour before or two hours after consuming dairy products, cereal, or orange juice. Avoid taking caffeine with Radinor 400mg Tablet. Contact a doctor if you experience headaches, tremors, restlessness, nervousness, insomnia, and increased blood pressure or heart rate.

Diet & Lifestyle Advise

  • Antibiotics can alter the beneficial bacteria in the stomach, which help in digestion. Therefore, you are advised to take foods rich in probiotics, such as yoghurt/curd, kefir, sauerkraut, tempeh, kimchi, miso, kombucha, buttermilk, natto and cheese.
  • Eat fiber-rich food like whole grains, beans, lentils, berries, broccoli, peas, and bananas.
  • Avoid foods rich in calcium, such as dairy products and grapefruit and grapefruit juice, as they may hinder the absorption of antibiotics.
  • Avoid consumption of alcohol and usage of tobacco.

Habit Forming

No

Therapeutic Class

[ANTIBIOTICS]

All Substitutes & Brand Comparisons

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Alcohol

Unsafe

Avoid consuming alcohol while taking Radinor 400mg Tablet, as it may cause increased dizziness.

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Pregnancy

Caution

Radinor 400mg Tablet belongs to pregnancy category C. Please consult your doctor if you are pregnant or planning to become pregnant. Your doctor will prescribe Radinor 400mg Tablet only if the benefits outweigh the risks.

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Breast Feeding

Caution

It is unknown if Radinor 400mg Tablet passes into breastmilk. Consult your doctor if you are breastfeeding before taking Radinor 400mg Tablet.

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Driving

Unsafe

Radinor 400mg Tablet may cause dizziness and light-headedness. So, drive only if you are alert.

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Liver

Caution

Dose adjustment may be needed. Please consult your doctor if you have liver impairment/liver disease.

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Kidney

Caution

Dose adjustment may be needed. Please consult your doctor if you have kidney impairment/kidney disease.

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Children

Unsafe

Radinor 400mg Tablet is not recommended for children below 18 years, as its safety and effectiveness have not been established in this age group.

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Heart

Caution

Radinor 400mg Tablet should be taken with caution in patients with heart problems. Please inform your doctor if you have any pre-existing heart problems before using Radinor 400mg Tablet.

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Geriatrics

Caution

Radinor 400mg Tablet should be given with caution in elderly patients due to an increased risk of side effects. Seek medical advice if you have any concerns.

Country of origin

India

Manufacturer/Marketer address

plot no : 1, new ahmedabad indl. estate, vill. morraiya, tal, sanand rd, changodar, gujarat 382213
Other Info - RA28309

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Author Details

Santoshini Reddy GDoctor badge

Written By

Santoshini Reddy G

M Pharmacy

Bayyarapu Mahesh KumarDoctor badge

Reviewed By

Bayyarapu Mahesh Kumar

M Pharmacy

Last Updated

Nov 21, 2025 | 11:21 AM IST

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