What is the dosage of oseltamivir (Tamiflu) for the treatment of influenza?

Updated: Oct 13, 2021
  • Author: Christian E Sandrock, MD, MPH, FCCP; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

Answer

Adolescents and adults

  • Aged ≥13 years: 75 mg PO q12h for 5 days

Children aged 1-12 years

Oseltamivir treatment varies by weight, as follows:

  • ≤15 kg: Oseltamivir 30 mg PO q12h for 5 days
  • >15 to 23 kg: Oseltamivir 45 mg PO q12h for 5 days
  • >23 to 40 kg: Oseltamivir 60 mg PO q12h for 5 days
  • >40 kg: Oseltamivir 75 mg PO q12h for 5 days

Children aged 2 weeks to younger than 1 year

  • 3 mg/kg/dose PO q12h for 5 days

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