Broccoli Sprout Extract in Treating Patients With Transitional Cell Bladder Cancer Undergoing Surgery

Inclusion Criteria: * Any patient eligible for superficial bladder cancer * Patients must be considered fit for surgical resection with curative intent * No chemotherapy, surgery (excluding transurethral resection of bladder tumor \[TURBT\], BCG or radiotherapy in the prior 4 weeks \[6 weeks for mitomycin C or interferon\]) * No previous treatment/ingestion with broccoli extracts * Eastern Oncology Group (ECOG) performance status 0-2 * AST and ALT =\< 2.5 times ULN (upper limit of normal) * Total bilirubin =\< 2.0 mg/dL * Creatinine Clearance \>= 30 ml/min * WBC \> 3000 mm\^3 * Absolute neutrophil count \> 1000/mm\^3 * Platelets \> 100,000/mm\^3 * All patients must sign a study-specific consent form indicating that they are aware of the investigational nature of this study Exclusion Criteria: * Have participated in any clinical trial involving conventional or investigational drugs or devices within the previous 4 weeks * Prior radiation to the pelvis * Intractable urinary tract infection that has not responded to antibiotic treatment * Active, uncontrolled bacterial, viral, or fungal infection including HIV * Have had major surgery within 4 weeks of starting therapy (not including placement of vascular access device or TURBT) * Poor medical risk in the opinion of the treating oncologist due to non-malignant systemic disease * Pregnant or lactating patients: patients must be postmenopausal or practicing an accepted form of birth control; for patients where pregnancy is a po…