Running Epistane while using tren would be like having one beer to augment the effects of an entire night of drinking Jack Daniels. Its useless and wont do anything.
I also have a theory on conversion of ph or ph precursors while on AAS - but im still researching it so i dont wanna put it out there. I may be off base so until i know im keeping it to myself.
TBH I agree with Dec11 and if i was going to add in an oral id add in a phamrceutical - not a ph or a ph precusor.
DHT based oral like say Var if u cant get winny. GR8 synergy with test/tren. I like winny and have had great results with test/tren/winny but Var is a good alternative.
JMO