The best way to jump start your program is just to start eating healthy. SparkPeople doesn't recommend any kind of cleanses, because your body doesn't need them. Your body is already very efficient at removing toxins, and products like this can actually do more harm than good. (They can mess with the balance of healthy bacteria in your system, making you sick.) So I'd save your money.
Hope that helps,
"You may have a fresh start any moment you choose, for this thing that we call "failure" is not the falling down but the staying down." Mary Pickford
"No matter how slow you go, you are still lapping everybody on the couch."