When you say "1 letro", I'm assuming you are saying 1 tab EOD. If so, that may be too much. .75mg EOD to 3x wk should be enough with 500mg test/500mg EQ. If you need more, you can always increase. Letro is a very strong AI and IMO, harder to control than adex. But if you have your dose right, for your body, it can be just as effective. If you are new to drol, keep it at 50mg, 1 tab.