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Tamiflu-oseltamivir flu treatment dosage for all age groups

Tamiflu dosage for the treatment of flu in adults and adolescents

The recommended starting dosage for most adults and adolescents over the age of 13 is 75 mg, twice a day, for five days. Tamiflu should be started within two days of first noticing flu symptoms.

Tamiflu dosage for prevention of the flu in adults and adolescents

Tamiflu should be started as soon as one has been in close contact with someone who has the flu, preferable within two days. The recommended dose for flu prevention in people age 13 or older is 75 mg once a day for at least 10 days. If there is a flu outbreak in your area, you can take 75 mg once a day for up to six weeks.

Tamiflu dosage for treatment or prevention of the flu in children

For the prevention or treatment of the flu in children ages 1 to 12, the recommended dosage of Tamiflu will be based on the weight of the child:
- Body weight =15 kg (33lbs): recommended dose for 5 days is 30 mg twice daily
- Body weight >15 kg to 23 kg (33 to 51lbs): recommended dose for 5 days is 45 mg twice daily
- Body weight >23 kg to 40 kg (51 to 88lbs): recommended dose for 5 days is 60 mg twice daily
- Body weight >40 kg (88lbs): recommended dose for 5 days is 75 mg twice daily ie adult dose

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