I Have A Metallic Taste In My Mouth That Does

I have a metallic taste in my mouth that does not go away. I have been on several medications for the past 3 years for prostate cancer. I have had nuclear radiation, shots of lupin and elagard, immunology treatments, prescription Zytega pills. The taste in my mouth is driving me crazy, I don't like to eat anymore and if I do eat, it is very funny taste in my mouth. Do you think these treatments I've been taking could be the cause, and if so, what can I do about it? Thank you