Muscletech products, like others said, are expensive, and I find that some work and some well... Don't. Cell-Tech seems to work well but at a high price you can find better, same goes for nitrotech. Read labels on most protien shakes, most contain the EXACT same things. Some are just more expensive because of a brand name. Stay away from Muscletech fat burners too. I tired Hydroxycut twice and both times failed to do anything but make me feel like i drank a bunch of coffee.