clenbutrx worked really well for me. in the first two weeks of using it I dropped 1% body fat and then another 1% the next two weeks. since then I have been on clen for a week and have one more week on this before I go back to the clenbutrx. the yohimbine in the clenbutrx makes you hornier than ron jeremy and gives you great energy for the gym. of course you have to deal with breaking out into a sweat the minute you swallow the shit!!!