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Oseflu75 mg
Beximco Pharmaceuticals Ltd.
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Generic medicine
Oseltamivir: Brands, Price & Uses in Bangladesh
Oseltamivir is indicated for the treatment and prevention of influenza in adults and children.
About Oseltamivir
Indications of Oseltamivir
Oseltamivir is indicated for the treatment and prevention of influenza in adults and children. Its use is classified below by strength of evidence:
- Established/FDA-approved: Treatment of acute, uncomplicated illness due to influenza A and B virus infection in patients who have been symptomatic for no more than 48 hours.
- Established/FDA-approved: Prophylaxis (prevention) of influenza A and B following close contact with an infected individual, or during a community influenza outbreak.
- Guideline-supported: Treatment of influenza in hospitalized patients, pregnant women, and patients at high risk of complications (e.g. chronic lung/heart/kidney disease, immunocompromised, elderly), even when started after 48 hours of symptom onset, per CDC and WHO guidance.
- Off-label (not FDA-approved but reported in the literature): Treatment of avian influenza (H5N1) and other novel influenza strains, and extended-duration treatment in severely ill hospitalized patients, under specialist guidance.
Oseltamivir is not effective against the common cold or other respiratory illnesses not caused by influenza virus, and should not be used empirically without a reasonable suspicion of influenza.
Dosage & Administration of Oseltamivir
Treatment of Influenza
| Age/Weight | Dose | Duration |
|---|---|---|
| Adults and adolescents ≥13 years | 75 mg orally twice daily | 5 days |
| Children >40 kg | 75 mg twice daily | 5 days |
| Children >23-40 kg | 60 mg twice daily | 5 days |
| Children >15-23 kg | 45 mg twice daily | 5 days |
| Children ≤15 kg (1-12 years) | 30 mg twice daily | 5 days |
| Infants 2 weeks to 1 year | 3 mg/kg twice daily (weight-based, per physician) | 5 days |
Treatment should begin as soon as possible, ideally within 48 hours of symptom onset, although it may still be prescribed later in high-risk or hospitalized patients under physician judgment.
Prophylaxis (Prevention) of Influenza
| Age/Weight | Dose | Duration |
|---|---|---|
| Adults and children ≥40 kg or ≥13 years | 75 mg once daily | At least 10 days after exposure; up to 6 weeks during a community outbreak, per physician |
| Children 1-12 years (weight-based) | Same weight bands as treatment, given once daily instead of twice daily | 10 days |
Renal Impairment
Dose reduction is required based on creatinine clearance (CrCl); see Use in Special Populations for details. No adjustment is needed for mild hepatic impairment.
Oseltamivir should be taken exactly as prescribed by a physician for the full duration, and not stopped early even if symptoms improve, to ensure adequate antiviral effect.
Side Effects of Oseltamivir
Common side effects of Oseltamivir include:
- Nausea and vomiting (most common; may be reduced by taking with food)
- Headache
- Diarrhea, abdominal pain
- Insomnia in some patients
Less common but serious effects include:
- Neuropsychiatric events - abnormal behavior, confusion, delirium, hallucinations, or self-injury, reported rarely, predominantly in pediatric and adolescent patients (see Precautions and Warnings)
- Severe skin reactions such as Stevens-Johnson syndrome, toxic epidermal necrolysis, or erythema multiforme (rare)
- Allergic reactions including anaphylaxis (rare)
Patients or caregivers should seek prompt medical attention for any unusual behavior, severe rash, or signs of an allergic reaction while taking Oseltamivir.
Contraindications of Oseltamivir
Oseltamivir is contraindicated in patients with known hypersensitivity to Oseltamivir or any component of the formulation.
Frequently Asked Questions about Oseltamivir
What is Oseltamivir used for?
Oseltamivir is used to treat influenza (flu) symptoms when started early, and to help prevent influenza in people who have been exposed to someone with the flu.
How quickly should I start taking Oseltamivir after flu symptoms begin?
Oseltamivir works best when started within 48 hours of the first flu symptoms, though a physician may still prescribe it later in high-risk or hospitalized patients.
Can Oseltamivir be given to children?
Yes, Oseltamivir is approved for treatment in children as young as 2 weeks old and for prevention in children 1 year and older, using weight-based dosing. Children should be watched closely for any unusual behavior while taking Oseltamivir, as rare neuropsychiatric side effects have been reported, especially in this age group.
Does Oseltamivir replace the flu vaccine?
No. Oseltamivir does not replace annual influenza vaccination, which remains the best way to prevent the flu. Oseltamivir is used for treatment or short-term prevention, not as a substitute for vaccination.
Is it safe to take Oseltamivir during pregnancy?
Oseltamivir should be used during pregnancy only if clearly needed, since the benefits of treating influenza in pregnancy may outweigh potential risks; a physician should always be consulted before use.
What should I do if I miss a dose or experience side effects?
Take the missed dose of Oseltamivir as soon as you remember, unless it is almost time for the next dose. Common side effects include nausea and vomiting, which may be reduced by taking Oseltamivir with food. Contact a physician immediately if unusual behavior, severe rash, or signs of an allergic reaction occur.
Disclaimer
The information provided is accurate to the best of our knowledge, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy, and the absence of specific information about a drug should not be taken as an endorsement. We are not responsible for any consequences arising from this information, so please consult a healthcare professional for any concerns or questions.