The Mars company has updated their nutritional information site, at
You can look up nutrition for all of their candy, but once you've clicked on one it's hard to find your way back to the main menu. Click on the X in the top right corner of the nutrition information box, or click on the "What's Inside" tab on the top left, to return to the list of candy. It's fascinating reading.
I think they used to list ingredients here, but I don't see the list anymore. Hmm.