I started using aloe after reading on all the wonderful properties, vitamins & minerals that it has, I use the real deal straight from the leave, just peel it extract the gel liquify it and mix with the food right before freezing.
Aloe contains natural vitamins A, B1, B2, B6, B12, E, C, Folic acid & Niacin and it is said to have ingredients that inhibit bacterial growth and fungus. It also has a substance that aids in the production of collagen.
I have been using it in my food for a couple of years now and I think it works good.