Hi guys . I recently switched from Arimidex 2 aromasin , and suffered a flare up of estrogen , I got blood pulled but no results yet ,, I was on 1\2 a Arimidex a day , then went to 12.5 aromasin , the flare up came within 2 days, left nip got really tender , no lumps but puffy , I started 20 mg nolva and up the aromasin to 1 tab a day ,,, 5 days on , no longer sore , or tender , but I'm wondering if aromasin takes 4 days to kick in or are the Italian Pfizer aromasin under dosed ,,,, when I first took Arimidex , I took to much 1 pill a day ,2nd pill crashed my e2 and couldn't get out of bed for 5 days ,,, but the aromasin seams to work different , slower , is this normal , should it take a week for a estro flare up or rebound , to start feeling normal again , should. I keep dose at 25 a day or drop to 12.5 , I have no sides yet no aches , and still think my e2 is a bit high , I'd hate to keep dosing at 25 and all of a sudden I crash , can any one with experience with aromasin please advise ,,,,, I trying to dial it in , but seems so different than Arimidex