According to the good doctors new book that came out in December of last year, there are to be NO aspartame products in your diet. Crystal light has aspartame.

You are to limit artifical sweeteners to 3 a day max.

So in answer to your question, forgo the artifical stuff for after induction. The purpose of induction is to detox your system and stop the cravings. Take it a day at a time....it is only for 2 weeks. Who knows after that those artifical drinks may taste sickeningly too sweet and you won't want them.

Nothing replaces water. If you drank 8 12 oz cans of soda a day you would still need to drink 64 ozs of water.