Hi and welcome to HCM..
I read your question completely and have understood it well..
Thank you for posting your query here.
Yes, your problem looks genuine.
I being a doctor, we have come across many such adverse effects of
Tamiflu. Especially the generic ones..
This is a well established side effect..
Headache
Nausea
Agitation
Vomiting Sometimes
fever..
All these are seen with Tablet Tamiflu..
I suggest you these things..
1. Do not worry, it is not something uncommon or fatal one.
2. Generally, it should self subside in a matter of time.
3. For these symptoms, 8 suggest not to avoid the tablet.
4. Various research going on to combat this side effect of Tamiflu..
Hope this helps you..
In case you need any further assistance. Let me know..
Take care and God bless.