SNDMN- Yes I used them for 4 week at 50mg a ed, and they kicked my ass...first week really couldn't tell much, however increased my cardio from 2 times a week at 20 minutes, to 4 times a week at 45 minutes, and kept my diet in check, and holy shit by week 3....I was getting ripped as hell.....thats for sure....you will like them, it would have been nice to run them another week or 2, but then again..money was an issue for me at the time, and plus also on top of that..I was starting to ache all over, and my shoulder stayed so fucking sore for another month, I went to the DR, and they x-rayed it and it was fine...no problems.....he said it was just maybe a strain(I think it was from the winny) Good luck bro!!