From what i understand adex is much harsher on your lipid profiles and isnt quite as strong.. Adex lowers estro by roughly 50% i think and aromasin lowers it by 85%, although adex does raise your test so does aromasin. Also aromasin can possibly raise your IGF levels... I was just thinking if you have to run an anti-e why wouldn't you use one that is less harsh on the body?