influenza
"I'm a teacher in Japan and caught the flu from my students. I have never felt more sick in my whole life - pounding head, nausea, chills, muscle aches and weakness. Every step was agony, to the point where I was crying like a baby. The doctor gave me Tamiflu and also something to bring down the temperature. Within a few hours of taking the initial dose, the most severe of the symptoms had disappeared. It's day three and now it just feels like I have a bad cold. I didn't get nausea like some other people, and my first dose was on an empty stomach. Everyone must be different. For those worried about nausea, my suggestion is asking the doctor to give you an anti-nausea medication to take with the Tamiflu."