thought we answered this earlier - EQ has very few sides except lean muscle gains - take arimdex if ur severely gyno prone or wanna shed extra water weight - otherwise its not hard on the hair, u usually dont catch a flu like u can on sust and there is nothing bad i can say about it. best shoot it 2x per week and get gaining - only drawback is it isnt the cheapest gear to get at a higher concentration - but it is cheap enough if u know where to go. hope that helps