Azithromycin
"I was prescribed and took the Azithromycin pack (Z Pack) when I came down with an acute case of Bronchitis. It was the traditional 2 pills at the first dose, and then 1 pill each following day. I started to feel a noticeable improvement by day 3, and was nearly completely better 7-8 days later. The medicine definitely worked for me, however, the side effects were strongly unpleasant. I had severe stomach pains, along with diarrhea, even when I did take the pills with food. Since the pills work for 10 days, i had the side effects for that long too.  Overall though, I happy I took the Z pack and it helped cure me quickly."