influenza
"My 5 year old son was diagnosed yesterday with influenza. When his fever reached almost 104 I took him to urgent care. He got his first dose only at midnight, but I could see a big difference today. Yesterday he was all lethargic and his high grade fever kept coming back every 4 hours. Today his fever was lower and so far, for the last 7 hours, he is fever free! I think this medicine really works if given early enough (my son got it within  30 hours of symptom onset)."