You want to use
Sustain Alpha for PCT. (recommended to be stacked with
Toco-8)
Dermacrine can be used during the cycle, or as a good cycle finisher because it clears very fast. So if your finishing with a long ester like enanthate or cypionate, which take a few weeks to clear from the last shot, then you could run Dermacrine up until the day you are ready for PCT.
-Pp