Yes and no, anyone that has used the product (norandro) in dione form for many cycles will be at risk of sideeffects, true gyno does'nt happen overnite and too many men think they have gyno where in fact its usually trapped bodyfat that is harder to burnoff but will
go away when bodyfat percentage drops.
however longterm users will develop gyno in time if they continue using the diones.
already a study in NZL has confirmed this I'll try and locate it for you guys and will post it when I can.
I suppose just a few cycles 2-3 might be okay but if you want to use prohormones I suggest one go with the nordiol version.