Is clen an effective drug to take by its self jus to burn some body fat and preserve the muscle instead of burning alot of muscle, I am doing a low carb diet and hitting the gym 3 days aweek with 3 days cardio. So in general I was just wondering what kind of weight i would lose if i ran it 4-6 weeks. And yes i have already hit the search button but isnt telling me anything . So please help me. Thank you