Metronidazole
"I was in hospital for extreme pain in my tummy, vomiting and diarrhea at same time which later turned into vomiting and pooping blood. Diagnosed with Colitis. She also said it was a BI. I stayed a day cause the pain was so bad and I couldn't keep anything down so I was giving morphine by IV till I could keep fluids down. Also on Flagyl 500 3x day and Cipro 500 2x day for 14 days. On my 4th day and this medicine has been a life saver!! I've lost 6 pounds in 4 days.  I'm only eating a couple crackers and soup juice.  Nothing taste right. some foods have a metal taste. Also, makes me ache like I have the flu.  But nothing like the pain I was in before! I will take these few side effects before going through the pain I had before."