Good question... I dunno what is the answer to that question. I'll do some research in Google and get back to you if I find an answer. You should email the people at Medifast as they probably can answer it..
I have to second EVERYTHING Graciebeliever said, as I had the exact same experience. Learning about what these drinks were doing to my body was all the motivation I needed to quit. The subsequent recovery of amazing, clean, consistent energy (plus sleeping deeper, falling asleep faster, and waking up easier) have been plenty to keep me off..
I chose to quit coffee before I chose to quit caffeine, because I was trying to get my body into a more alkaline state. I transitioned first with green tea and then with yerba mate..
I gave up soda with no transition at all because one day I woke up and realized that drinking liquid chemicals makes no sense. When I want something fizzy I grab a bottled kombucha from Wonderdrink or GT's:.
It's not about giving up something wonderful - it's about GETTING something wonderful (improved health) by letting go of things that are bad for you..
Good luck with the shift - glad you made the decision!..
For me, I miss the soda, so I just buy natural carbonated water, and add to natural juice, orange juice, lemonade, apple, etc. it does the job..
I drink what blue213 drinks! I really love grape juice mixed with a small amount of agave before adding the carbonated water...
I'm in your boat.... caffeine products have been the hardest thing for me to ween off of. BUT... for contrast, back in April, I'd get a Starbucks latte in the morning and have 2-3 cups of Keurig coffee at work all filled with (organic) skim milk..
Now, I have coffee maybe once a week, if I'm really craving it, with some almond milk and agave nectar and 3-4 Syzmos a week, on days when I feel like I need a push to get to the gym. I also love Yerba Mate "lattes" with almond or cashew milk and agave..
For those of you transitioning, Syzmos are completely kickass. They are certified organic and they use *gasp* agave nectar! It's not raw, but, they taste phenomenal and have pretty good ingredients. They have made a huge difference in my ability to transition raw and keep me happy..