I have bladder cancer. To date it has been non-invasive. I am about to go for my third bladder resection of low grade cancer. I have multiple tumours again and am confident it is non-invasive. I have had one eight week treatment with BCG.My urologist is recommending I begin another BCG treatment with Interferon added. I guess my question would be if anyone out there has had Interferon could let me know what to expect. I'm not in panic mode but those fears are present as my father passed away in 1985 from this same cancer.