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Oseltamivir Phosphate

Pill images, imprints and guides

Oseltamivir Phosphate comes in 57 pill versions in our database, in 3 strengths, from 24 manufacturers. Check the imprint to tell them apart.

What is Oseltamivir Phosphate used for?

Oseltamivir Phosphate is used for flu.

Medicine type
Antiviral
Official uses from the US prescribing label

Treatment of Influenza

Oseltamivir Phosphate capsule is indicated for the treatment of acute, uncomplicated illness due to influenza A and B infection in patients 2 weeks of age and older who have been symptomatic for no more than 48 hours.

Prophylaxis of Influenza

Oseltamivir Phosphate capsule is indicated for the prophylaxis of influenza A and B in patients 1 year and older.

Limitations of Use

  • Oseltamivir Phosphate capsule is not a substitute for early influenza vaccination on an annual basis as recommended by the Centers for Disease Control and Prevention Advisory Committee on Immunization Practices.
  • Influenza viruses change over time. Emergence of resistance substitutions could decrease drug effectiveness. Other factors (for example, changes in viral virulence) might also diminish clinical benefit of antiviral drugs. Prescribers should consider available information on influenza drug susceptibility patterns and treatment effects when deciding whether to use Oseltamivir Phosphate Capsule.
  • Oseltamivir Phosphate capsule is not recommended for patients with end-stage renal disease not undergoing dialysis.

From the FDA-approved label on DailyMed (published Sep 10, 2026).

Doctors sometimes prescribe a medicine for other reasons too. If you are not sure what yours is for, ask your pharmacist.

Oseltamivir Phosphate pill images

30 mg 19 pills

45 mg 17 pills

75 mg 21 pills