You may experience joint pain if your dose is too high. If this is the case, just reduce your dose by 1 pill and it will subside in a few days.
Isbetter used on cycle or as part of PCT?
Using an AI during PCT is not always the best idea - you'd be better off using something like Sustain Alpha, that controls estrogen, but doesn't kill it. You're going to get much stronger of an estrogen rebound if you use an AI during PCT.
In the end, what you use on-cycle and in PCT is ultimately up to you.
The Primordial Performance
I thought erase was a suicide inhibitor and wouldn't cause much of a rebound? Or am I totally off the mark here?