I am using it and have been for the past several months. I have been quite happy with the results, but do not expect miracles. It is probably most useful in conjunction with a keto diet(Although, I am using a cyclical isocaloric diet) Due to the localized delivery, carbs may not be as much as an issue as with oral yohimbine(Insulin negates the lipolytic effects of yohimbine) Also, I believe Par Deus has stated it is probably not cost effective unless you are already at or below 12%bf(Although I started using it when I was still about 16%bf because I was impatient and it still seemed to work okay) or have a VERY bad fat distribution. The message boards at bodybuilding.com have a fair amount of feedback(mostly positive, some negative) about it as well. I also get a fair amount of CNS stimulation from it, but this is not all that common with most users.