Hi Andy, it’s an interesting question and one I have asked my urologist. His response was drinking or smoking could effect or irritate your bladder whilst in treatment. I would suggest you speak with your medical team and see what they have to say. I decided against drinking whilst in treatment and I don’t smoke anyway, but I don’t believe it’s a definitive no to whether you can or can’t have a drink with non-invasive bladder cancer. Noel, (BladderCancer.net Team Member)