I had SBRT and am winding up six months of ADT. SBRT was easy. For about two months afterward, I had frequent urination, burning urination if I drank acidic drinks (I just COULDN'T give up coffee), and some occasional tiredness.
ADT, though, has been awful. I have one more month to go and have decided I will NEVER do it again even if it means a shorter life. Where to begin on the side effects: tachycardia, muscle and joint pain, nausea, loss of appetite and weight as a result (40 pounds in 4 months), ED, anorgasmia, insomnia, severe depression and suicidal thoughts, and memory problems (forgetting names of common objects and sometimes people I've known for years). It makes for a very poor quality of life but I only have exactly one month to go.