Amoxicillin
"I was treat in an Urgent Care Center for an infection. I am rather sensitive to antibiotics and so warned the nurse treating me. She prescribed the drug (875 mg, 2X daily). I took the first pill with a meal about 6PM. I awoke at 2AM with tremendous abdominal pain and diarrhea. I called 911 and was taken to the hospital via ambulance. I was there for 5 days while they treated me mainly for dehydration. I was near death."