Bro - when your taking a gram +, then you are definitely talking mgs not mcgs ED. Gotta disagree tho on the ED vs EOD - they are the same, half life is 50hrs NOTE:

The recommended daily dose is 1 mg. This is rapidly absorbed, but is eliminated slowly (half-life 50 hours). The drug is extensively metabolised with most metabolites excreted in the urine; however, no dose reduction is advised for patients with liver or kidney disease. Although anastrozole can inhibit the cytochrome P450 system, this effect occurs at higher concentrations than would be expected to occur in patients.

From the (Aust Prescr 1997;20;45-50)