With the rolling out of the new year, Beachbody has reformulated their P90x Results and Recovery Formula, as well as the protein bars. A lot of people have been asking about the old recovery drink vs. the new recovery drink. The main difference between them is that the old one used Fructose as the primary sugar with some Dextrose and Maltodextrin on the side. The new one eliminates the Fructose for you, while making Dextrose the primary sugar with some Maltodextrin. Otherwise, they are pretty much identical.
Fructose isn't necessarily "bad" for you, it is the sugar found in fruits and honey, but it doesn't absorb in your body as quickly as Dextrose will. Dextrose (like fructose) is a monosaccharide, but Dextrose is chemically equivalent to pure glucose. Maltodextrin is a polysaccharide usually derived from corn starch which, although chemically more complicated than dextrose, still absorbs rather quickly.
Other aspects of the Recovery Drink that have stayed the same are the 4:1 carb to protein ratio. There is a general consensus in the fitness community that this is an "ideal" balance. The drink also contains healthy doses of common vitamins and minerals, and a trace amount of creatine.
The reason you drink a recovery drink is to get sugar into your system quickly to replace your used up glycogen stores in the muscles, which you most likely burned through during your p90x or Insanity (or other anaerobic exercise) workout. You want to do this as quickly as possible - that is why it is a liquid and not a solid in the first place - while your body is most ready to receive it. By doing this, you are creating the ideal conditions in your body to start repairing and rebuilding muscle tissue. Don't get the idea that if you and your buddy workout, and you use the Recovery Drink and he doesn't, you'll be jacked immediately and he'll never see results - but know that it is common weight training speak that the building comes in the recovery, so this drink is just another tool to help aid in the recovery.
As of now, the old recovery is still available in clearance, but all other sales are the new formulation. The tub of old formula is marked down at about $30. Now that you know the science, you might consider just buying the new formulation :), but for those of you who want to save a little money, you can load up on some old formula before it disappears forever! This is certainly a limited time offer.
Here is a direct link if you are having trouble finding the clearance section: http://teambeachbody.com/shop/-/shopping/MDSUPRECO30?referringRepId=72418 .