Inland1der,
I had CIS initially and did a few BCG treatments. I had severe reactions and was taken off of it. It is the best thing going for dealing with CIS. Since I had problems, the second best option was mitomycin.
Mine came back a couple years later and I needed to get my bladder removed but that sounds like a much bigger deal than it actually has been for me.
Bladder cancer has a very high recurrence rate and the BCG treatment needs follow up courses. It has a very high success rate of keeping the bladder cancer from coming back (as long as one follows the maintenance dose protocol).
Here is a website link to the site of the leading authority on BCG.
www.bcgoncology.com/treatment/bcgInst.html
. Hunt around at that site for lots of good information from Dr. Lamm.
Talk to your 2nd opinion bladder cancer specialist about the dose strength. According to Dr. Lamm's research it seems that a lower dose can reduce the probability of having problems with BCG without losing any efficacy.
Best of luck in your treatment. Ask anything and everything. Lots of us here have been where you are now.
BTW: I just celebrated my 3 year cancer free milestone. My first time with bladder cancer was in 2006. This thing is not going to get you!
Mike