I am starting on my fourth day of OLE 400 mg two times a day, and I felt so bad on Monday that I came home. I've had a headache, fatigue more than usual amount, more sinus drainage, sore throat, sore lymph nodes, just plain miserable with more than the usual aches and pains, etc. In addition, I've had pain in my back area where the kidneys are. Today, I forced myself to work all day and came home totally exhausted and more miserable than ever. How long will this last? Also, when should I stop? Your help with this is appreciated.