In bodybuilding and steroid use, side effects with aromasin are rare when taken at an appropriate dosage. Some guys will complain of joint pain from dryness, so when that occurs the dosage should be brought down. Sides among females are much more common because, even though the dosages are similar, the female body will react differently to an AI than a male will. In addition, females will take this drug for a longer period of time when compared to a steroid user. Bottom line is the side effects of not taking an AI for a male on cycle is much more of a risk.