Standard starting dosages run 75-100mg per week. Then we retest and titrate from there to get you to the top of normal range. For instance, I just had a guy come in at only 151mg/dL. I started him on 100mg per week, and he went to 760ng/dL, with no estrogen problem. It's a beautiful thing!
I have noticed a couple things about my HRT patients who used to do AAS: 1). they NEVER want to do anything but IM Upjohn, and 2). it seems to take more testosterone to get them to the top. I wish I had an explanation for #2, but that is just the way it works out.
I also have a few patients who cycle from time to time, then use HRT in between. It's A LOT more work for 'Ol Doc, but I am learning much from watching how their bodies respond to my ever evolving protocols.
Yes, all the above are available to them. My guys so far have said they don't crash like they used to. However, one must keep in mind that it takes a given serum androgen level to maintain a given amount of muscle mass. Funny, though, several have told me they actually look their best about a month after they go off (whatever "best" means).