Liquid substitutes for green veggie juices are not nearly as good for the body  as the raw green veggie juices themselves.  I have also listed on my blog a few liquid supplements I take, including green food.  Again, I suggest you read the blog.  There are also  forums on CureZone that will answer your questions such as: http://curezone.com/forums/f.asp?f=119

I would never substitute my green veggies for something else because substitution is far weaker than the real thing.  Supplementing, however,  is different than substitution, because you are adding to the green veggies, rather than having the supplement take the place of the green veggies.

Hope this helps.

~ Dazzle