Take AIFM and the lowered estrogenic nature might keep progesterone down as well. B6 is cheap and worth a try. I think Tyramine is sort of effective as well and is easy to get (correct me if i'jm wrong Macro...). There are other agents like Bromo, Cabergoline (dostinex/cabaser), Selegine, etc....but they cost a lot more and may not even be needed.
Like Ulter mentioned, most users may not have a problem with nandrolones, but it is out there and becomming more prevalent due to what macro stated (misunderstanding its aromatization from test/dbol in their cycles.).
I think the other thing that people are missing about NPP is that it clears the system faster than the decanoate ester. Therefore, once negative symptoms start occuring, discontinuation can usually result in a quick decline of sides. With NPP, you can find out fairly quick whether or not you are sensitive to nandrolones as the effects are rather quick and dramatic (which can be good or bad for different user's).
BMJ