I'm going to disagree with Mr.X on this one and tell you to KEEP the Aromasin ON HAND and use only as needed. You are only using 500mg of Test per week. It doesn't sound like you know if you have a problem with your body converting Test to Estrogen at a hight rate, and even then you still don't know if your body is prone to suffering from Estrogen related side effects. I suggest you have the Aromasin and some Nolva on hand and only use them if you need them.