bacterial infection
"I was given this antibiotic after a stint in the ER. I was told that I have colitis. Anyway, the day I started them, I had a sinus issue like no other. Paaaaiiinnn. The next morning my lymph nodes were the size of golf balls. On day 2, stomach pain started. It was unrelenting, and I couldn't eat or drink anything without vomiting. This persisited through day 3. Well lo and behold, this crap can cause pancreatitis and aren't I the lucky one. I stopped it immediately!! The next morning, the pain was almost gone, and I could eat clear liquids. By the second day, I was much much better.  It has a 8 hour half life, so it took about 48 hours to clear from my system. This is a highly dangerous drug."