dental abscess
"This is my 5th time this year on Metronidazole for an impacted wisdom tooth that can't be removed but keeps developing an abscess. It usually follows a failed course of amoxicillin and although it always clears up the infection the side effects are pretty awful. I feel like I've the flu for the first few days (fever, fatigue, unable to sleep, stomach cramps and loss of appetite) which usually means I have to miss work and then a really sickly stomach for the last three. It also takes me a few days after finishing the course for my energy levels and stomach to get back to normal. So drug works but the side effects are worse than my actual aliment."