I was on Zoladex for 3 years. The ' threat' was/is that effects last for as long as you were on the treatment. I suppose this basically was true for me but obviously things eased gradually after last injection. I clearly remember having hot flushes/night sweats 2 years after HT stopped although nowhere near as bad as when on treatment and nowhere near as often, on a decreasing scale. Funnily enough, some 6 years after last Zoladex implant, I feel as though I have the occasional hot flush, which can happen, someone said we could have them for life. As I say I was on Zoladex, other ADT treatments may differ etc.
Peter