Oh no! Sorry to hear he's so sick. Tamiflu is good stuff! One year me and one son had the flu and stayed in bed for over a week. We didnt get to the doctor soon enough to start Tamiflu. My other son got sick a few days later and was diagnosed with the flu and strep and started Tamiflu. The next day he was running around and was feeling fine. Hope Tamiflu works as well for your son.