I'm posting on behalf of my brother who has stage 4 metastatic bladder cancer now affecting his liver. Latest Blood tests were bad, so oncologist said no more chemo. He has had cisplatin and atezolizumab. I just feel I can't sit back and let him die! I want to help him. He is a fighter. Could he use cannabinoids like sativex? Or what? I am desperate, and I know he and his wife are too. Please any ideas? Thank you