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What is Tamiflu?
Tamiflu is a brand medication that contains Tamiflu, which belongs to a class of antivirals known as neuraminidase inhibitors. It works by preventing the invasion of viruses into cells. It is therefore used to treat and prevent Influenza A and Influenza B (also known as flu).
How to use it?
Tamiflu is available as tablets and oral suspensions.
For the prevention of flu,
Adult / Child 13-17 years / Child 1-12 years whose body weight is 40 kg or above
75mg once daily for 10 days after exposure. During an epidemic (flu season), it can be taken for up to 6 weeks.
Child 1-11 months
3mg/kg once daily for 19 days after exposure.
Child 1-12 years whose body weight is 10-15 kg
30 mg once daily for 10 days after exposure. During an epidemic (flu season), it can be taken for up to 6 weeks.
Child 1-12 years whose body weight is 15-23 kg
45 mg once daily for 10 days after exposure. During an epidemic (flu season), it can be taken for up to 6 weeks.
Child 1-12 years whose body weight is 23-40 kg
60 mg once daily for 10 days after exposure. During an epidemic (flu season), it can be taken for up to 6 weeks.
For treatment of flu
Adult / Child 13-17 years / Child 1-12 years whose body weight is 40 kg or above
75 mg twice daily for 5 days (or 10 days if immunocompromised).
Child 1-11 months
3 mg/kg twice daily for 5 days.
Child 1-12 years whose body weight is 10-15 kg
30 mg twice daily for 5 days.
Child 1-12 years whose body weight is 15-23 kg
45 mg twice daily for 5 days.
Child 1-12 years whose body weight is 23-40 kg
60 mg twice daily for 5 days.
Who should not take Tamiflu?
- People who are allergic to Tamiflu or other components of the formulation.
Pharmacist Tips:
- Tamiflu is solely used for the prevention and treatment of seasonal flu, but not the annual flu vaccine. The influenza vaccine is still the mainstay of prevention of seasonal flu.
- It is best to start treatment within 48 hours after symptoms occur.
Common dosing schedule:
It may be taken with food to reduce stomach upset.
This schedule is for reference only, adjustments may be made according to individual needs.
Some common medications Tamiflu may interact with:
Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.
Where to buy Tamiflu in Hong Kong?
In Hong Kong, Tamiflu is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.
For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk
Need more information?
For detailed information about the use of Tamiflu in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.
Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.
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