Hi. Internal use of aloe vera for
dogs, however, is frowned upon by some experts. They claim that this plant contains chemical compounds known as saponins, which are used in some detergents as sudsing agents. These compounds may make some dogs ill, especially in large quantities. My opinion on aloe vera products is it's fairly safe for external use (as in shampoos, creams, etc.) but I would not use it as an internal remedy for anything in dogs or cats.