Not medical advice. This information is for educational purposes only. Always consult a qualified doctor or pharmacist before taking any medicine. Oseltamivir requires a valid prescription.
Oseltamivir
Generic Name: OSELTAMIVIR PHOSPHATE
Oseltamivir phosphate, USP, an influenza neuraminidase inhibitor (NAI), is available as: A powder for oral suspension, which when constituted with water as directed contains 6 mg per mL oseltamivir base.
Data last updated: 30 March 2026 · Source: openFDA.gov, DailyMed (NLM/NIH)
Common Brand Names in India:
What is Oseltamivir Used For?
- Acute
- Influenza viruses change over time.
- Emergence of resistance substitutions could decrease drug effectiveness.
How Does It Work?
The binding of oseltamivir carboxylate to human plasma protein is low (3%).
Dosage & Administration
- This is the preferred formulation (6 mg per mL) for patients who cannot swallow capsules.
- Adults and Adolescents (13 years of age and older) The recommended oral dosage of oseltamivir phosphate for oral suspension for treatment of influenza in adults and adolescents 13 years and older is 75 mg twice daily (12.5 mL of oral suspension twice daily) for 5 days.
Side Effects
Common Side Effects
Serious Side Effects (seek immediate medical attention)
Warnings & Precautions
- If neuropsychiatric symptoms occur, evaluate the risks and benefits of continuing oseltamivir phosphate for oral suspension for each patient. 5.3 Risk of Bacterial Infections There is no evidence for efficacy of oseltamivir phosphate for oral suspension in any illness caused by pathogens other than influenza viruses.
Who Should NOT Take This?
- Oseltamivir phosphate for oral suspension is contraindicated in patients with known serious hypersensitivity to oseltamivir or any component of the product.
- Patients with known serious hypersensitivity to oseltamivir or any of the components of oseltamivir phosphate for oral suspension ( 4 )
Drug Interactions
Oseltamivir may interact with the following medicines. Always inform your doctor about all medications you are taking.
Storage Instructions
Storage Store dry powder at 20º to 25ºC (68º to 77ºF); excursions permitted to 15º to 30ºC (59º to 86ºF) [See USP Controlled Room Temperature].
Speak to a general physician on Zospital
Consult a general physician on Zospital before starting Oseltamivir. Verified Indian specialists available for in-clinic and online consultations.
Other Antivirals Medicines
Sources: openFDA.gov · dailymed.nlm.nih.gov · nlm.nih.gov (RxNorm). Information is for educational purposes only. Consult a doctor before use.
FAQS
Oseltamivir – Frequently Asked Questions
Common questions about Oseltamivir, its uses, dosage and safety.
Oseltamivir is commonly prescribed in India for: Acute, Influenza viruses change over time., Emergence of resistance substitutions could decrease drug effectiveness.. Always confirm the indication with a registered medical practitioner before starting any course.
Oseltamivir is sold in India under brand names such as Tamiflu, Fluvir, Antiflu, Oseltamivir Phosphate. You can also find it on online pharmacies like 1mg, Pharmeasy and Apollo Pharmacy.
Oseltamivir is a prescription-only (Schedule H) medicine in India. You will need a valid prescription from a registered MBBS / MD doctor to purchase it from a licensed pharmacy.
Common side effects of Oseltamivir can include: Nausea, Vomiting, Diarrhea, Headache, Rash. Less common but serious side effects can include: Serious, Anaphylactic, Seizure, Stevens-johnson. Stop the medicine and contact your doctor immediately if any of these appear.
The binding of oseltamivir carboxylate to human plasma protein is low (3%).
Oseltamivir can interact with: Vaccine, Interaction, Phosphate, Suspension, Clinical. Tell your doctor about every medicine, supplement and herbal product you take — including ayurvedic and homeopathy preparations — before starting Oseltamivir.
Indian guidelines often recommend lower starting doses of Oseltamivir for patients above 60-65, since kidney and liver function decline with age. A doctor should review the dose, especially if the patient already takes BP, sugar or heart medicines.
Pregnancy safety of Oseltamivir depends on the trimester and individual case. Indian gynaecologists usually avoid Category C/D drugs unless benefit clearly outweighs risk. Speak to your obstetrician before taking Oseltamivir during pregnancy or while planning conception.
Prices in India typically range from ₹30 – ₹500 per strip / vial depending on brand. Generic versions tend to cost 30-60% less than branded ones, and Jan Aushadhi outlets often stock the lowest-priced equivalents. Check 1mg or Pharmeasy for live MRP.
If you remember within a few hours of the missed dose, take it. If it is nearly time for the next dose, skip the missed one — never double up. Frequent missed doses reduce Oseltamivir's effectiveness, so consider setting a reminder or speaking to your doctor about a simpler schedule.
You can book an in-person or online consultation with a verified Indian specialist on Zospital — visit the doctor directory at https://zospital.com/doctor to find one near you.
Medical Disclaimer
The content provided on Zospital is for general informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. If you think you may have a medical emergency, call your doctor or emergency services immediately.