m prone to them due to spinal cord damage that makes it hard to empty my bladder completely, so I have LOTS of experience. The standard course
with cipro is 250mg, twice daily, for a full 10 days. Even more standard is tx with sulfa drugs, but I developed an allergy to them so I haven't had them for ages. During my final stages of triple tx I got one bladder infection that (probably due to my low WBC) moved almost instantaneously into my kidneys, and that required the 500mg dose of cipro.