My doctor said he has been prescribing Cipro for 20 years and has never heard of anyone having really, really bad reactions to it. Headache is the only side effect I had in the first two days.
I'm on day 5 of a 14-day treatment course. I'm taking Cipro 500 mg tablets twice a day. The first 3 days I was sick in the morning. On day 5, the nausea subsided, and I felt much better.