Ever since my radiotherapy last year I have problems with bladder sensitivity to caffeine. I know radiotherapy can irritate the bladder and I don't think all those days of needing to have a reasonably full bladder at the appropriate time helped. This is easy to handle by sticking to de-caff tea and de-caff coffee (it's been surprising how many restaurants etc now have de-caff tea but I now carry a few tea bags in my handbag). However, the lack of caffeine is making me lack energy which is a big problem in trying to lose weight, or at least not put on any more ( I have secondary Lymphoedema and also Lipoedema). Has anyone else had this? I am wondering if Ginseng would work to increase my energy. Has anyone tried Ginseng or got an alternative suggestion?