Randomized, Phase II Clinical Trial of Sulforaphane in Bladder Cancer Chemoprevention

The study will be presented to eligible patients by the patient's surgeon at the time when an appointment is made for cystoscopy for suspicion of bladder cancer (BC) or to confirm BC diagnosis. Participants will be asked to spend 21 to 30 days in this study. The study will be conducted during the time from when the participant is diagnosed with bladder cancer to when they undergo a surgical procedure for the treatment or removal of their bladder cancer. The surgical procedure is done as a part of their regular medical care. Participants will be asked to come for 1 additional visit as part of this research study at the midpoint between their biopsy and surgery.