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compositionComposition:OSELTAMIVIR-12MG
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Prescription Medicine
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Fluvir Oral Suspension is used to treat viral infections. It contains Oseltamivir, which stops the proliferation of viruses and treats viral infections. In some cases, you may experience nausea, abdominal pain, vomiting, and diarrhoea. 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 pre-existing medical conditions.

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

Composition :

OSELTAMIVIR-12MG

Manufacturer/Marketer :

Hetero Drugs Ltd

Consume Type :

Oral

Expires on or after :

Jan-27

Return Policy :

Not Returnable

About Fluvir Oral Suspension

Fluvir Oral Suspension is an oral suspension used to treat and prevent influenza (the flu) in adults and children. It is designed to target the flu virus specifically, helping to reduce the severity of symptoms like fever, cough, sore throat, and body aches. This medicine is most effective when started within two days of your first flu symptoms.

To get the best results, you must take Fluvir Oral Suspension consistently for the entire duration prescribed by your doctor, even if you start feeling better sooner. You can take this liquid medicine with or without food, but taking it with food or a glass of milk is highly recommended as it helps prevent stomach upset. While fighting the flu, getting plenty of bed rest and drinking warm fluids can help your body recover much faster.

Most people tolerate this medicine well, though some may experience mild temporary side effects like nausea or vomiting. If you notice any serious issues, such as sudden changes in behaviour, extreme confusion, or a severe skin rash, stop taking the medicine and contact your doctor immediately.

Before you begin taking Fluvir Oral Suspension, you should talk to your doctor if you have kidney disease, heart problems, lung disease, or any other serious health conditions. Do not take this medicine if you have had a severe allergic reaction to it or any of its ingredients in the past.

This medicine can interact with certain other treatments. For example, it can interfere with the effectiveness of the live nasal spray flu vaccine. It is important to consult your doctor or pharmacist if you are pregnant, breastfeeding, or managing medications for an elderly family member to ensure safe and proper use.

Uses of Fluvir Oral Suspension

Fluvir Oral Suspension is used in the treatment and prevention of influenza. The detailed uses of Fluvir Oral Suspension are as follows:

  • Influenza (Flu) Treatment: Fluvir Oral Suspension helps treat active flu infections caused by influenza viruses, helping you recover faster and reducing the severity of your daily symptoms.
  • Influenza (Flu) Prevention: It can be used to prevent the flu in people who have been closely exposed to someone with the virus or during a local flu outbreak.

Key Benefits

Fluvir Oral Suspension helps treat influenza (flu) by reducing the duration and severity of symptoms when started early in the illness.

The following are the benefits of this medication:

  • Helps shorten the duration of flu symptoms, typically by one to two days when started early.
  • Helps reduce the risk of certain flu-related complications, such as lung infections (pneumonia) or bronchitis, which sometimes require hospitalisation.
  • Helps provide a convenient and easy-to-swallow dosing option when available as a dry syrup that is mixed into a liquid suspension.
  • May be particularly convenient for young children, older adults, or people who have difficulty swallowing tablets.
     
Side effects of Fluvir Oral Suspension 75 ml
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.
To prevent, manage, and treat Constipation caused by medication usage, follow these steps:
  • Preventing Vomiting (Before it Happens)
  • Take medication exactly as prescribed by your doctor. This can help minimize side effects, including vomiting.
  • Having a small meal before taking your medication can help reduce nausea and vomiting.
  • Talk to your doctor about taking anti-nausea medication along with your prescribed medication.
  • Managing Vomiting (If it Happens)
  • Try taking ginger in the form of tea, ale, or candy to help alleviate nausea and vomiting.
  • What to Do if Vomiting Persists
  • Consult your doctor if vomiting continues or worsens, consult the doctor for guidance on adjusting your medication or additional treatment.
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.
  • 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.

Directions for Use

  • Take Fluvir Oral Suspension with food to prevent stomach upset.
  • Be sure to follow your doctor's instructions regarding the dosage and duration of treatment.
  • For Suspension: Take the prescribed dose by mouth using the measuring cup provided with the pack.
  • For Dry syrup: Gently tap the bottle a few times to loosen the powder. Add boiled and cooled water until it reaches the mark on the bottle. Close the bottle tightly and shake well to form a uniform suspension. Take the prescribed dose of the reconstituted suspension by mouth using the measuring cup provided with the pack.
  • Avoid using regular household spoons, as they may not accurately measure the dose.

How Fluvir Oral Suspension Works

Fluvir Oral Suspension contains oseltamivir, which belongs to a class of medicines called neuraminidase inhibitors. When the influenza virus enters your body, it infects your cells and replicates. To spread and infect neighbouring healthy cells, the newly formed virus particles rely on an enzyme called neuraminidase on their surface. This medicine works by blocking this specific enzyme. By stopping the enzyme from working, the virus particles become trapped inside the already-infected cells and cannot spread throughout your body. This controls the spread of the infection, giving your natural immune system a better chance to clear the virus quickly.
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Alcohol

Caution

Alcohol is not known to cause any unpleasant side effects if taken along with Fluvir Oral Suspension. But intake of alcohol with Fluvir Oral Suspension may damage your liver. So intake of Fluvir Oral Suspension should be avoided with Fluvir Oral Suspension.

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Pregnancy

Caution

Fluvir Oral Suspension is a pregnancy Category C medicine. It is not known whether Fluvir Oral Suspension will affect pregnant women or the fetus or not. However, the intake of Fluvir Oral Suspension should not be associated with an increased risk of congenital disabilities.

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Breast Feeding

Consult your doctor

Fluvir Oral Suspension passes into the milk in smaller quantities, but it gives a therapeutic effect to the baby. However, consult your doctor if you are breastfeeding before taking Fluvir Oral Suspension.

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Driving

Unsafe

Fluvir Oral Suspension can affect alertness and coordination. So, operating machinery which requires concentration should be avoided.

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Liver

Unsafe

Fluvir Oral Suspension is not recommended in patients with liver disease. Please consult your doctor if you have liver problems.

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Kidney

Unsafe

Fluvir Oral Suspension is not recommended in patients with kidney disease. Please consult your doctor if you have kidney problems.

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Children

Caution

The safety and efficacy of Fluvir Oral Suspension in children have not been established. Hence, contact your doctor.

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Heart

Consult your doctor

Let your doctor know if you have any history of heart disease before using Fluvir Oral Suspension.

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Geriatrics

Consult your doctor

Please consult a doctor if you have any concerns regarding the use of Fluvir Oral Suspension in elderly patients.

What if I have taken an overdose of Fluvir Oral Suspension

If you or someone else takes much more than the prescribed dose, seek immediate medical attention or contact your local poison control centre right away, even if there are no immediate signs of discomfort.

Diet & Lifestyle Advise

  • Prioritise Hydration: Drink plenty of water, clear broths, or herbal teas to prevent dehydration caused by fever and to help thin out mucus.
  • Get Adequate Rest: Give your body the energy it needs to fight the viral infection by staying in bed and avoiding strenuous physical activity.
  • Manage Nausea: If the medicine causes mild stomach irritation, eat small, bland meals consisting of simple foods like crackers, toast, or rice.
  • Use a Humidifier: Using a cool-mist humidifier in your room can soothe dry nasal passages and relieve persistent coughing.

Health Queries

Is it safe to give Fluvir syrup twice a day to a nine-month-old baby for a severe cold and cough?

G.santoshini Reddy

G.santoshini Reddy

M Pharmacy (Pharmaceutics)

I understand how worrying it is when your little one is unwell. Fluvir (oseltamivir) is an antiviral medication specifically used to treat influenza (the flu), not a standard cold or cough. It should only be given to a nine-month-old baby under the direct supervision and prescription of a pediatrician, who will determine the exact, safe dosage based on your baby's weight. Please do not give this medication without consulting your doctor first. For now, keeping your baby hydrated and using saline nasal drops can help bring some comfort. Please have a pediatrician evaluate your baby to ensure they get the right care.

Will the prescribed Fluvir syrup help lower my son's high inflammation marker (CRP of 14) after a week-long fever, and is hospitalization necessary if his fever continues tomorrow?

Vikas Singh

Vikas Singh

M Pharmacy

Fluvir (oseltamivir) is an antiviral that targets the flu virus. While it doesn't directly lower C-reactive protein (CRP), treating the underlying infection will help his body recover, which will gradually bring his CRP down. A CRP of 14 indicates inflammation is present. If his fever continues tomorrow, please have his pediatrician re-evaluate him rather than rushing to the hospital, unless you notice warning signs like extreme lethargy, difficulty breathing, or poor fluid intake. His doctor can best decide if further tests or hospitalization are needed.

Can I give Fluvir syrup and Calpol 250 together at the same time to my 5-year-old son (weighing 17 kg) for his fever, cold, and cough, and is Fluvir syrup supposed to come in a powder form?

Vikas Singh

Vikas Singh

M Pharmacy

Hello. Yes, you can safely give Fluvir (oseltamivir) and Calpol 250 (paracetamol) together to your son; they do not interact negatively. Calpol helps with fever and pain, while Fluvir fights the flu virus. Also, yes, Fluvir dry syrup normally comes as a dry powder. You will need to mix it with sterile, cooled water up to the mark on the bottle before giving it to him. Please ensure you shake it well before each dose and follow your pediatrician's exact dosage instructions for his 17 kg weight. Your little one will feel better soon!

The fever has returned today even after taking medication for the past 6?7 days. What to do?

Dr. S Aneela

Dr. S Aneela

M. Pharm (Pharmacology)., PhD

If fever returns even after 6?7 days of medication, it is important to get re-evaluated by a doctor. Persistent or recurring fever can happen with infections such as Typhoid Fever, Dengue Fever, malaria, flu, or other illnesses that may need blood tests and proper diagnosis. Continue rest, fluids, and Paracetamol for fever if advised. Avoid taking additional antibiotics on your own. Seek urgent medical care if you develop breathing difficulty, severe weakness, vomiting, confusion, rash, bleeding, or dehydration.

Hello sir/ma'am, I'm suffering from fever from last 4 days. I'm out of station. Where medical facility is not up to the mark. I have pain, like some weight on my head. I shivered then got fever and after that a lot of sweat. I have pain in my eyes also. Feeling weakness also. Please suggest me medicine and tell me what it is? I am in doubt of maleriya. Thank you.

Dr. S Aneela

Dr. S Aneela

M. Pharm (Pharmacology)., PhD

Fever with shivering, sweating, headache, eye pain, and weakness can happen in infections such as Malaria, Dengue Fever, flu, or other viral illnesses. It is difficult to confirm the exact cause without tests, so please avoid starting antimalarial or antibiotic medicines on your own. For now, rest well, drink plenty of water/ORS, and you may take Paracetamol for fever if you are not allergic to it. Since the fever has continued for 4 days, try to get a blood test for malaria, dengue, and CBC as soon as possible. Seek urgent medical care if you develop breathing difficulty, vomiting, confusion, severe weakness, or bleeding symptoms.
health query

Have a query?

How Soon It Starts Working

  • The time required for Fluvir Oral Suspension to start to work: The time required for Fluvir Oral Suspension to show its action is not clinically established.
  • The time for which the effects of Fluvir Oral Suspension last: The duration of action for Fluvir Oral Suspension is not clinically established.

What if you forget to take Fluvir Oral Suspension

If you miss a dose, take it as soon as you remember. However, if your next scheduled dose is less than 2 hours away, skip the missed dose and resume your regular dosing schedule. Do not take two doses at the same time to make up for a missed one.

Storage

•Store the dry, unmixed powder at room temperature, below 25°C, in a dry place away from direct moisture and light.

Drug Warnings

  • Check the liquid before use: Shake the mixed medicine well before each dose and make sure it looks evenly mixed. If large clumps remain after shaking, contact your pharmacist before using it.
  • Do not share the medicine: Never give Fluvir Oral Suspension to another person, even if they have the same flu-like symptoms. The medicine should be used only as prescribed.
  • Use it for flu only: Fluvir Oral Suspension is an antiviral medicine used to treat or prevent influenza (flu). It does not treat common colds, sinus infections, or bacterial infections.
  • Tell your doctor about flu vaccination: Inform your doctor if you are planning to receive a flu vaccine. Avoid the live nasal-spray flu vaccine within 2 weeks before or 48 hours after taking Fluvir Oral Suspension unless your doctor advises otherwise.
  • Watch for unusual behaviour: Closely monitor children and teenagers for unusual mood changes, agitation, confusion, or abnormal behaviour while taking Fluvir Oral Suspension. Seek immediate medical attention if these symptoms occur.

Drug-Drug Interactions

verifiedApollotooltip
  • Live Influenza Vaccine (Nasal Spray): This medicine can stop the live virus in the nasal vaccine from multiplying, making the vaccine less effective. Avoid using the live nasal vaccine close to your treatment window.

 

No Drug - Drug interactions found in our data. We may lack specific data on this medicine and are actively working to update our database. Consult your doctor for personalized advice

Drug-Drug Interactions

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Drug-Food Interactions

verifiedApollotooltip
  • No clinically significant food interactions were found.
No Drug - Food interactions found in our database. Some may be unknown. Consult your doctor for what to avoid during medication.

Drug-Food Interactions

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All Substitutes & Brand Comparisons

Habit Forming

No

Therapeutic Class

[ANTIVIRALS]

FAQs

Fluvir Oral Suspension is used to treat viral infections. It plays a vital role in treating symptoms caused by the influenza virus. It is used to treat cough, stuffy nose, sore throat, chills/fevers, and tiredness.
If you miss a dose of Fluvir Oral Suspension, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take an extra dose to make up for a missed dose.
Fluvir Oral Suspension contains oseltamivir, which is an antiviral medication. It blocks the enzyme present on the surface of a virus that helps the virus enter uninfected cells of the body to cause influenza infection in the body. As a result, this stops the proliferation of viruses and slowly leads to the viral infection clearing up.
Do not stop taking Fluvir Oral Suspension without talking to your doctor. If you suddenly stop taking Fluvir Oral Suspension, you may experience confusion, fever, changes in mental state, or severe muscle stiffness. Your doctor will probably decrease your dose gradually depending on your disease condition.
Fluvir Oral Suspension is not used for the common cold, sore throat, or sinus infection. It is used for symptoms of influenza viral infection.
Fluvir Oral Suspension may be taken with antibiotics only if recommended by the doctor. Talk to your doctor before use.
Fluvir Oral Suspension is not likely to cause high blood pressure. If you experience any of these symptoms, please consult your doctor.
No, it is not a steroid. It is an antiviral medication.
Fluvir Oral Suspension is not currently approved for treating COVID-19, which is caused by the SARS-CoV-2 coronavirus, although it is being used in clinical trials.
Fluvir Oral Suspension contains oseltamivir, which is an antiviral medication.
Tamiflu® is a brand of oseltamivir that comes in a capsule form.
Take Fluvir Oral Suspension within 48 hours of flu symptom onset. It’s best to take Fluvir Oral Suspension with food; there is less chance of stomach upset if you take it with a light snack or meal.
Common side effects of Fluvir Oral Suspension may include nausea, abdominal pain, vomiting, and diarrhoea. Most of these side effects of Fluvir Oral Suspension are temporary, do not require medical attention, and gradually resolve over time. However, if the side effects are persistent, reach out to your doctor.
Fluvir Oral Suspension is neither an antibiotic nor a sulfa drug. It is an antiviral medication.
Fluvir Oral Suspension is a prescribed medication; it is available only with your doctor's prescription.
Consume only if the doctor prescribes it to you. Never encourage self-medication or suggest your medicine to someone else.
Yes, Fluvir Oral Suspension is a safe and effective medication used to treat Influenza (cough, stuffy nose, sore throat, chills/fevers, and tiredness).
It depends on your medical condition and response to the medication. Your doctor will determine the appropriate duration of treatment based on your specific needs.
You should consult your healthcare provider before taking this medicine if you are pregnant or breastfeeding. Your doctor will weigh the benefits of treating the flu against any potential risks to your baby.
If your child vomits within 30 minutes of taking the liquid, contact your doctor or pharmacist. Do not immediately give another dose without professional medical advice, as they will tell you whether to repeat the dose or wait.
Yes, if your child dislikes the taste of the liquid suspension, you can mix the measured dose with a small amount of sweetened liquid, such as chocolate syrup, caramel topping, or light brown sugar dissolved in water, right before taking it. Talk to your pharmacist for detailed instructions.
No, this medicine is not a substitute for your yearly flu vaccine. The flu shot remains the most effective way to prevent flu infections. Talk to your doctor about keeping your vaccinations up to date.
Yes, you can typically take this medicine alongside common over-the-counter pain and fever reducers like paracetamol or ibuprofen. However, always consult your doctor or pharmacist to confirm that these combinations are safe for your specific situation.

Disclaimer

While we strive to provide complete, accurate, and expert-reviewed content on our 'Platform', we make no warranties or representations and disclaim all responsibility and liability for the completeness, accuracy, or reliability of the aforementioned content. The content on our platform is for informative purposes only, and may not cover all clinical/non-clinical aspects. Reliance on any information and subsequent action or inaction is solely at the user's risk, and we do not assume any responsibility for the same. The content on the Platform should not be considered or used as a substitute for professional and qualified medical advice. Please consult your doctor for any query pertaining to medicines, tests and/or diseases, as we support, and do not replace the doctor-patient relationship.

Reference

  1. CiplaMed Clinical Compendium. Antiflu Capsules Suspension Product Specification Guide. Mumbai, India: Cipla; 2024. [Accessed on 02 Jun. 2026]Check here
  2. Drugs.com Clinical Review Team. Oseltamivir Clinical Drug Monograph. Auckland, NZ: Drugs.com; 2026. [Accessed on 02 Jun. 2026]Check here
  3. WebMD Medical Reference Review Board. Details Drug and Treatment Monograph. Atlanta, GA: WebMD; 2026. [Accessed on 02 Jun. 2026]Check here
  4. ANTIFLU Capsules [Internet]. CiplaMed. 2021 [Accessed on 14 Oct 2025]Check here
  5. Roche Products Ltd. Electronic Medicines Compendium (EMC). [Revised in January 2022] [Accessed on 12th May 2022]Check here
  6. ANTIFLU Capsules/ Suspension (Oseltamivir phosphate). Ciplamed.com. [Revised in April 2020] [Accessed on 12th May 2022]Check here
  7. CDSCO [Internet]. Cdscoonline.gov.in. 2021 [Accessed on 19 May 2021]Check here

Country of origin

INDIA

Manufacturer/Marketer address

7-2-A2, Hetero Corporate, Industrial Estates, Sanath Nagar, Hyderabad – 500 018. Telangana, INDIA
Other Info - FLU0259
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