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Fluvir Oral Suspension

Oseltamivir Phosphate (12mg/ml)
Genuine
Authenticity Assured
Prescription
required

Product Summary :

Fluvir Oral Suspension is an antiviral medicine that contains oseltamivir. It is used to treat and prevent influenza (flu). It works by inhibiting the spread of the flu virus in the body, which helps reduce the severity and duration of symptoms. Start treatment as early as possible for the best results. Take it as prescribed, preferably with food to reduce stomach upset. Common side effects include nausea, vomiting, headache, and stomach pain. Use it with caution in patients with kidney problems. Inform your doctor if you notice unusual behavioral or mood changes.


Written By Dr. Lipika Khurana, PGDHHM, BDS,
Reviewed By Dr. Mekhala Chandra, MD, MBBS,
Last updated on 11 Apr 2026 | 04:58 PM (IST)
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75 ml Oral Suspension
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Gurgaon
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General Information

Contains

Oseltamivir Phosphate (12mg/ml)

Marketer

Hetero Drugs Ltd

Storage

Store below 25°C
The content is shown in English
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Product introduction

Fluvir Oral Suspension is an antiviral medicine used to treat and prevent influenza (flu). It helps relieve symptoms of flu infection, such as a stuffy or runny nose, sore throat, cough, body aches, tiredness, headache, fever, and chills.

Fluvir Oral Suspension prevents the flu virus from spreading inside the body. Take it in the exact dose and duration prescribed by your doctor. It can be taken with or without food. Taking it with food can reduce the chance of feeling or being sick (nausea or vomiting).


Do not skip any doses and finish the full course of treatment even if you feel better. Stopping the medication too early may result in a relapse of the infection or failure to protect you from the flu.


Some common side effects include nausea, vomiting, stomach pain, and diarrhea. These side effects mostly occur after the first dose of the medicine and will usually stop as treatment continues. Please consult your doctor if these side effects persist for a long time.


Before taking it, tell your doctor if you have problems with your heart, liver, or kidneys. Do not use Fluvir Oral Suspension if you have a known history of allergic reactions to any ingredients of this medicine. Pregnant or breastfeeding mothers should consult their doctor before using this medicine.

Uses of Fluvir Oral Suspension

Benefits of Fluvir Oral Suspension

Treatment and prevention of Influenza (flu)
Fluvir Oral Suspension is an antiviral medicine used to treat and prevent influenza (flu), a viral infection that affects the nose, throat, and lungs. It helps relieve symptoms such as a runny or blocked nose, sore throat, cough, body aches, tiredness, headache, fever, and chills. When taken as prescribed, it can help you recover faster, reduce the severity of symptoms, and lower the risk of spreading the infection.

Side effects of Fluvir Oral Suspension

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Fluvir
  • Nausea
  • Vomiting
  • Abdominal pain
  • Diarrhea

How to use Fluvir Oral Suspension

Take this medicine in the dose and duration as advised by your doctor. Check the label for directions before use. Measure it with a measuring cup and take it by mouth. Shake well before use. Fluvir Oral Suspension may be taken with or without food.

How Fluvir Oral Suspension works

Fluvir Oral Suspension is a neuraminidase inhibitor. It inhibits neuraminidase (influenza virus enzyme), which helps the viruses to enter uninfected cells of the body to cause or spread influenza infection in the body. This is how it works against the virus to treat influenza (flu).

Dosage

The dose of Fluvir Oral Suspension depends on your age, body weight, the condition being treated, and your overall health. It is usually taken once or twice a day, depending on whether it is used for treatment or prevention of influenza. However, your doctor will decide the right dose and duration of treatment for you.


 


Take Fluvir Oral Suspension exactly as prescribed. Do not take more than the recommended dose and do not use it for longer than advised. Continue the medicine for the full duration recommended by your doctor to help ensure effective treatment.


 


Missed Dose


If you miss a dose of Fluvir Oral Suspension, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double the dose.


 


Overdose


An overdose of Fluvir Oral Suspension may cause nausea, vomiting, headache, and stomach pain. If overdose is suspected, please contact your doctor.

Quick tips

  • Take Fluvir Oral Suspension exactly as prescribed and complete the full course, even if you start feeling better.
  • Consider taking Fluvir Oral Suspension with food to reduce stomach upset.
  • Fluvir Oral Suspension is not a substitute for influenza vaccination, and your doctor may recommend both.
  • Drink plenty of fluids and get adequate rest while recovering from flu symptoms.
  • Small, frequent meals may help if nausea or vomiting occurs while taking Fluvir Oral Suspension.
  • Inform your doctor immediately if you notice unusual mood changes, confusion, agitation, or behavioral changes, especially in children and adolescents.
  • Seek urgent medical help if you have breathing difficulty, a very high fever, severe weakness, confusion, or bluish lips.
  • Wash your hands often, wear a mask if advised, and avoid close contact with others to reduce the spread of flu.
  • Inform your doctor if you are pregnant, breastfeeding, or have kidney disease before taking Fluvir Oral Suspension.
  • Consult your doctor if symptoms worsen or return after initial improvement.

Safety advice

Alcohol

Alcohol

CONSULT YOUR DOCTOR
It is not known whether it is safe to consume alcohol with Fluvir Oral Suspension. Please consult your doctor.
Pregnancy

Pregnancy

SAFE IF PRESCRIBED
Fluvir Oral Suspension is generally considered safe to use during pregnancy. Animal studies do not indicate harmful effects. However, there are limited human studies.
Breast feeding

Breast feeding

CONSULT YOUR DOCTOR
Fluvir Oral Suspension may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.
Driving

Driving

CONSULT YOUR DOCTOR
It is not known whether Fluvir Oral Suspension alters the ability to drive. Do not drive if you experience any symptoms that affect your ability to concentrate and react. Please consult your doctor.
Kidney

Kidney

CAUTION
Fluvir Oral Suspension should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.
Liver

Liver

SAFE IF PRESCRIBED
Fluvir Oral Suspension is safe to use in patients with liver disease. No dose adjustment is recommended.

Interaction with drugs

Taking Fluvir with any of the following medicines can modify the effect of either of them and cause some undesirable side effects
Moderate

Leflunomide (Oral Route)

If concurrent use is essential, watch out for symptoms such as nausea, vomiting, headache or abdominal pain and consult your doctor if you experience them. They may adjust the doses as per the observations. Leflunomide may reduce blood levels of the active form of Oseltamivir Phosphate.
Moderate

Probenecid (Oral Route)

Your doctor may monitor the treatment outcome and may modify the treatment protocol as per the observation.
Moderate

Teriflunomide (Oral Route)

If concurrent use is essential, watch out for symptoms such as nausea, vomiting, headache or abdominal pain and consult your doctor if you experience them. They may adjust the doses as per the observations. Teriflunomide may raise blood levels of Oseltamivir Phosphate.
Moderate

Nitisinone (Oral Route)

If concurrent use is essential, watch out for symptoms such as nausea, vomiting, headache or abdominal pain and consult your doctor if you experience them. They may adjust the doses as per the observations. Nitisinone may raise blood levels of Oseltamivir Phosphate and its active form.
Mild

Chlorpropamide (Oral Route)

Your doctor may monitor the treatment outcome and may modify the treatment protocol as per the observation.

Frequently asked questions

Fluvir Oral Suspension is an antiviral medicine used to treat and prevent influenza (flu) caused by influenza A and B viruses. It may be prescribed for adults and children, depending on age, body weight, and the condition being treated. The medicine works by stopping the virus from spreading inside the body, which helps reduce symptoms and speed recovery. It should be taken only as prescribed by a doctor.
No, Fluvir Oral Suspension does not treat the common cold. It is an antiviral medicine used specifically for influenza (flu), not for common cold infections. Although flu and cold symptoms may look similar (like runny nose, cough, or sore throat), they are caused by different viruses, and this medicine works only against the influenza virus.
No, Fluvir Oral Suspension is not an antibiotic. It is an antiviral medicine (oseltamivir). Antibiotics work against bacteria, whereas Fluvir Oral Suspension works by stopping the spread of the flu virus in the body. So, it will not treat bacterial infections and should only be used when prescribed for flu by your doctor.
Fluvir Oral Suspension should be started as soon as possible after flu symptoms begin, ideally within 48 hours for the best results. Early treatment helps the medicine work more effectively by slowing the spread of the influenza virus in the body. It may also be prescribed within 48 hours after close contact with someone who has the flu to help prevent infection. Always use it exactly as directed by your doctor.
Yes, Fluvir Oral Suspension may be used to prevent influenza after close contact with someone who has the infection if prescribed by a doctor. It helps stop the influenza virus from multiplying in the body and may reduce the chance of developing flu symptoms. However, it is not meant for routine cough or the common cold. For prevention, it should usually be started within 48 hours of exposure and taken exactly as advised by your doctor.
Fluvir Oral Suspension should be given to children only if a doctor has recommended it for that specific child. The safety and dose depend on the child’s age, body weight, hydration status, fever pattern, and the exact illness being treated. Children respond differently to medicines, so proper medical guidance is important. Seek medical help quickly if the child becomes unusually sleepy, breathless, unable to drink fluids, or develops a rash after taking Fluvir Oral Suspension syrup.
Fluvir Oral Suspension does not usually cause sleepiness in most people, but individual reactions can vary depending on the medicine and the person’s health condition. Some people may experience mild dizziness or tiredness while their body adjusts to treatment. If you feel unusually sleepy, dizzy, or unwell after taking the medicine, avoid driving or operating machinery and consult your doctor.
No, Fluvir Oral Suspension is not a steroid. It is an antiviral medicine designed to stop influenza viruses from multiplying in the body. Steroids work differently by reducing inflammation, while antiviral medicines specifically target viruses. Always use Fluvir Oral Suspension syrup only for the condition prescribed by your doctor and not for general cold or cough symptoms.
If you miss a dose of Fluvir Oral Suspension, take it as soon as you remember, unless it is almost time for your next scheduled dose. In that case, skip the missed dose and continue with your normal schedule. Do not take a double dose to make up for a missed one because it may increase side effects without improving effectiveness. If you frequently miss doses, consult your doctor for advice.
Fluvir Oral Suspension can usually be taken with or without food as directed by your doctor. Taking it with food may help reduce stomach discomfort in some people. If vomiting or stomach upset occurs, your doctor may recommend taking it after meals and maintaining good hydration. Always follow the instructions given by your doctor.
Some people may experience mild side effects such as nausea, vomiting, stomach upset, dizziness, or loose stools while taking Fluvir Oral Suspension. These effects are usually temporary and improve as the body adjusts to the medicine. However, seek medical attention immediately if you notice severe rash, breathing difficulty, swelling of the face, fainting, or other unusual symptoms.
Fluvir Oral Suspension should only be used during pregnancy if a doctor clearly recommends it. The safety of medicines during pregnancy depends on the stage of pregnancy and the reason for treatment. Because some medicines may affect the baby, it is important to consult a doctor before starting, stopping, or repeating Fluvir Oral Suspension syrup during pregnancy.
Fluvir Oral Suspension may be unsafe to use during breastfeeding. Limited data suggest that the medicine can pass into breast milk and may harm the baby. It should be used only if your doctor decides that the benefit to you outweighs the possible risk to your baby. Always consult your doctor before using this medicine while breastfeeding. If prescribed, monitor your baby for any unusual symptoms such as excessive sleepiness, poor feeding, or rash, and seek medical advice if these occur.
Fluvir Oral Suspension should be used with caution in people who have kidney disease and only under a doctor’s supervision. Kidney problems can affect how medicines are processed in the body and may increase the risk of side effects. If you notice reduced urine output, swelling, or unusual weakness while taking Fluvir Oral Suspension syrup, consult your doctor promptly.
Fluvir Oral Suspension is generally safe to use in patients with liver disease, and no dose adjustment is usually required. However, it is still advisable to use this medicine under medical guidance, especially if you have an existing liver condition. If you notice symptoms such as yellowing of the eyes or skin, dark urine, severe nausea, or unusual tiredness, contact your doctor promptly.

Fact Box

Chemical Class

Gamma amino acid derivative

Habit Forming

No

Therapeutic Class

ANTI INFECTIVES

Action Class

Neuraminidase Inhibitors

References

  1. Acosta EP, Flexner C. Antiviral Agents (Nonretroviral). In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. New York, New York: McGraw-Hill Medical; 2011. pp. 1608-609.
  2. Safrin S. Antiviral Agents. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. p. 872.
  3. Oseltamivir Phosphate [Prescribing Information]. Foster City, California: Gilead Sciences; 2012. [Accessed 31 Mar. 2019] (online) Available from:
  4. Central Drugs Standard Control Organisation (CDSCO). [Accessed 31 Mar. 2019] (online) Available from:
  5. Oseltamivir phosphate [Prescribing Information]. Foster City, California: Gilead Sciences, Inc.; 2011. [Accessed 25 Jul. 2024] (online) Available from:
  6. Oseltamivir [Product Monograph]. Mississauga, Ontario: Hoffmann-La Roche Limited; 2022.
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User feedback

Twice A Day
75%
Once A Day
20%
Thrice A Day
3%
Four Times A Day
2%
Influenza (flu)
67%
Others
33%
Average
50%
Poor
33%
Excellent
17%
No Side Effect
62%
Diarrhea
12%
Vomiting
12%
Nausea
12%
With food
80%
With or without food
20%
Expensive
61%
Not Expensive
22%
Average
17%
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Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Hetero Drugs Ltd
Address: 7-2-A2, Hetero Corporate, Industrial Estates, Sanath Nagar, Hyderabad – 500 018. Telangana, INDIA

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Fluvir Oral Suspension. Once the pharmacy accepts your order, the details of the pharmacy will be shared with you. Acceptance of your order is based on the validity of your doctor's ℞ and the availability of this medicine.

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