Amantadine for influenza A virus infection

Amantadine tablets(50mg)

In 1966, Amantadine was approved By FDA for the treatment for influenza A infection 

in USA. Accidentally, the patients with Parkinson disease who took this drug improved

the tremor symptom.  thereafter also approved.  In Japan, this drug was first approved for 

the treatment for Parkinson disease and then for influenza A virus infection.

Amantadine granules(10%).

Trade name: Symmetrel fine granules

Dosage of Amantasine

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1~9 year ---------- 5mg/kg/day(max.150mg). in 1 or 2 divided doses.

10 year older (body weight 40kg> )  -------  200mg/day. 1 or 2 div.

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8-year-old boy of influenza A virus infection, treated with Symmetrel.  

Any questions:  write to Keiji Hagiwara MD.

                                      keijihagiwara@gmail.com