it can be done, but id rather go 6-8 weeks with each
you can do it your way though, NPP will have peaked and have stable levels within a week
why stack deca and npp though? same drug
or are you too lazy to wait for the deca to build up again if you lay it off?
cant answer the prami question, youll have to try.
tren is stronger than npp mg for mg so it might give you issues... or might not
test npp tren together is my favorite (liver friendly) stack by the way
never tried deca though