Nitrofurantoin
"It's day two today and I have been running a high fever, I have the chills, extreme nausea, and I feel dizzy to the point of passing out. My UTI symptoms are still very much there. I've missed three days of work now. I've taken it with a big bowl of soup every time now as well. All I want to do is sleep. I'm pretty sure I slept over ten hours today so far, and I'm starting to get a headache now."