For many people Cipro works astonishingly quickly, within a day or two. Heck, I started feeling better within hours, and at first I believed I had to be imagining it. For some folks it’s slower or doesn’t work at all. I *think* the discussions of Flagyl have been less surprised by the speed of the response, but it’s tricky to interpret, since many posts just say “antibiotics.”
I hope you have a wonderful, worry-free vacation!