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Antivirals

Oseltamivir

Also sold as: Tamiflu

Prescription neededAntivirals

Comes as:CapsuleSuspension

Usual adult dose

Antivirals

Oseltamivir

Also sold as: Tamiflu

Prescription neededAntivirals

Comes as:CapsuleSuspension

Usual adult dose

Usual adult dose for flu: 75 mg twice a day for 5 days, best started within 48 hours of the first symptoms. Prevention after close contact: 75 mg once a day for 10 days. Children: dose by weight — ask your doctor.

Your doctor may give you a different dose. Children's doses depend on weight.

Side effects

Common

nausea
vomiting
headache
stomach pain

Serious — get help

Stop taking it and see a doctor straight away if you notice:

severe allergic reaction
severe skin rash
sudden confusion or unusual behaviour (mostly in children and teenagers)

Do not take it, or take care, if

Known allergy to oseltamivir
Severe kidney disease (dose must be reduced)

Interactions

No important interactions are listed in our database. Still tell your doctor or pharmacist everything you take.

Pregnancy

Category C

A risk to the baby cannot be ruled out. Use only if your doctor says the benefit is greater than the risk.

Check with my other medicines

Always follow your doctor or pharmacistThis page is general information, not a prescription. Do not start, stop or change a medicine on your own.