Chicken «meal» is also a good source of meat, with water and fat removed in processing, allowing a much more pure source of protein. (puppy-basics.com)
I keep this brand of activated charcoal on hand because it is made from coconut shells and is the most pure source I've personally found. (wellnessmama.com)
If we can't count on raw fruits and vegetables to be pure sources of nutrition, how are we supposed to obtain the energy necessary for life? (globalhealingcenter.com)