.5 if you need if you need it. You may not even need it on this cycle but you want to have it on hand in case. You can get by with .5 eod if you aren't feeling symptoms and just want to be safe. There are several different theories on what's best when it comes on AI on cycle.
By the way can we get your stats in this thread please? Age, height, weight, years training, all that good stuff.
-Legacy