Nolvadex is a competitive inhabitor of estrogen, meaning it competes for the recepter site, using Nolvadex will reduce IGF-1 production around 34%....give or take...

Armidex is a non-competitive inhabitor of estrogen, meaning it stops the conversion in it's tracks...Peroid!! It will reduce IGF-1 production around 24%...give or take, Armidex is better, and hence the high price....

Start the Nolva at 40mg's per day until sides subside then continue at 20mg's every other day for rest of cycle....Will this cut into gains...Sure, but Ranger's Word's on this:

" I'd rather sacrafice 10 pounds of water, than grow 5 pounds of titties! "

Hope this helps a bit....Good Luck!!

Ranger