Consider this a cautionary tale, your results will very. I'v just gone through this myself. Dr prescribed trt, Adex and estrogen sensative. I swapped to liquid Aromasine three weeks before my draw and while he only noticed that my E went from a 12 (6 month prior to draw) to a 52.....rebound! I can tell you that I definitely noticed a loss of libido and my wife noticed that plus my mood was a bit more sour. That rebound is not fun coming off Adex. I suspected that the brand wasn't working for me so I swapped to another brand and noticed things started coming around. This was confirmed a week ago when I did another draw and now I'm sitting at 22 and feeling back to normal. My advice would be to have more than one brand of Aromasin ON HAND. Make a mental note of your general well being before the swap, let your significant other know you are making the swap, they may be able to give some feed back that you aren't picking up on. Both brands of Aromasin I used were sources from this forum. I think you will be happy just make sure you have a back up plan.