My rule of thumb has always been to use a SERM any time a methyl has been in the equation. PP's TRS was enough for any DHEA-based cycle I've run. I also used TRS only after an Epi/Dermacrine cycle and had no issues. But I would never again PCT without a SERM if I've taken anything methylated.
It's entirely plausible that you can get serious shutdown from DHEA-based compounds, but I think that's probably dose dependent. There's no crime in using a SERM for peace of mind. I don't believe you can 'overdo' PCT.
All advice given is for entertainment value only. And it's free. Take it for what it's worth.
I had forgotten about the Trenazone product being on the market. Good point.
The reason I referenced methyls is because just about every one of them on the market tends to be very harsh to the endocrine system overall, particularly the HPTA axis. There aren't very many non-methyls left out there on the market anymore that are worth a shit and capable of producing significant suppression and endocrine disruption, but Trenazone is certainly one of them.