its nothing fancy, just an MRP - meal replacement powder.
having it in place of several meals a day is not wise. first, it doesn't have enough fiber. second, it won't fill you up. third, too much liquid food equals some truely horrible experiences in the bathroom.
I recommend no more than two liquid meals or snacks a day, usually two protein shakes...one as a snack paired with a carb, veggie, or fat...and the other as your post workout meal, paired with simple/sugar carbs.