If your friend has had radio therapy on his prostate, that sounds serious. Although I wouldn't presume to give advice if your friend requires radio therapy- I do know that zinc is very good in a general way for maintaining the health of the prostate. A friend of mine has some "waterworks" problems andtook a vitamin with zinc and the problem cured itself. I would look for natural things that help.Pumpkin seeds are high in zinc and the herb saw palmetto. However it is best to consult the doctor if you decide to try something herbal. It sounds as though the injections and morphine are suppressing the pain than curing the problem. Whilst consulting the doctor and getting the medical treatment ,your friend feels he needs, I would suggest he looks into more natural and non-invasive treatments as well.