Dragoninho - What brand are you using? I wonder if some are better then others. I feel great the first week of MK but go down hill fast after that. It is almost like it makes my joints weak or lose. I slipped disc in my back 3 times in 3 months. Shoulder was having issues. Elbows were having issues. I know they are all mostly likely tied together. The bad part is I was not having any issues before this. Started taking it to help with recovery then the problems started coming. I kept taking it because I thought it would help. When i stopped is when the problems when away. I haven't used it for 3 months and everything has healed well and I am back to my normal lifts. I just started using cic w dac again and feel great!