I am 45 and also on trt,and also have Ed issues.My doc prescribed viagra and I use it sparingly. I don’t always need it,but it does mess with my self confidence at times.Some days the erections are strong,but don’t last so viagra is needed.Now generic viagra is available and I can buy more.My estrogen also gets a bit high at time,but my doc and I have figured just to bring down my try dosage and things seem to even out after a few weeks. I agree with everyone here though,get an AI and maybe lower your try dosage too.Good luck to you