This is the sickest I have been in a long time, at least a year. I have chronic recurrent migraines, easily 2 a month, and fibromyalgia, so when the severe headache, neckache and nausea started Saturday, I thought it was another migraine. It wasn't until I started running a fever I realized it was not my usual health problems. I stayed out today, tomorrow is iffy. Mild sore throat, chest and head congestion, headache, nausea, ghastly gastro, swollen lymph gland, fever that I swear despite 2 extra strength tylenols every 4 hours did not break for over 24 hours....this stuff is a tail-kicker. If