BCG and Drinking Water

I agree with what Sara Anne said.

I would caution that the recommended retention time (a.k.a. dwell time) is "up to 2 hours." The instruction sheet that I received when I had my first BCG treatment had this written in bold type.

So upon arriving home from BCG maintenance treatment (half dose) I was thirsty and without thinking drank a pint of water. This was while BCG still in my bladder. I was able to retain it for 2+ hours as proscribed but am wondering if the water I drank diluted or neutralized the treatment rendering it ineffective (or less effective). I didn't see any cautionary instruction advising against water intake when I researched it but was wondering if anyone on this board can offer any additional insight. Thanks.