That is not the case following radiation therapy and it will take a year or longer. There are several clinical trials using various agents from vitamins to diet, etc. Doctors look at the PSA doubling time to guide them in decision making. The slower the doubling time, the better for the patient. A doubling time of six months or greater carries a better prognosis than a doubling time of less than six months.
Hot flashes are the most common side effect of hormonal therapy.
It can be a very difficult problem to deal with. Redhog, I think your doctor is doing what is best for you. PSA 19.5 now on Zoladex. Have hot flashes. Just wait for the PSA to go down.