Metronidazole
"This medicine works wonders as far as its effectiveness. However the side effects are HORRIBLE!!! Not only do I have a disgustingly, horrible taste in my mouth that nothing seems to get rid of, but I'm so nauseous that every time I have to take another one, I automatically throw up just from the thought. The directions say to eat before or take with food, but I can't keep anything down, not to mention I'm extremely thirsty, but when I try to drink anything (including water) its disgusting. Everything tastes like this pill. I feel like I have a fever although I've checked many times, and I don't, and I'm having horrible headaches. However all of my symptoms are gone thank God. Lesson learned, currently abstinent for a long time!!"