Metronidazole
"This medication worked wonders! I was a little skeptic about it from doing research but with anything you google search; if you dig around long enough you will eventually find something scary. I have had no diarrhea while on this medication as some of the complaints were mostly about diarrhea, nausea, headaches and cramps. Let me tell you, drink PLENTY of water!  Don't drink soda, tea, punch etc I mean straight up water! I also picked up Kefir, it's a cultured low fat milk smoothie. It will do wonders for your stomach! I also took Zantac 150mg 30 mins before taking the metro pill. Only side effect I have had was a tender tongue under my chin. PS; if ur urine is dark (common complaint by most) u need more water people! hope this helps you!"