Originally Posted by SamIam
Purina is one of the companies responsible for nutrition research and their foods are good and adequate. If you look at the ingredients label on your bag of Now!, you will see a long list of vitamins, minerals, amino acids, etc. that they have added to ensure your kitty gets what she needs. You will also an AAFCO statement, don't feed anything without one on the label.
You must own stock in Purina or something.
9-Lives has a pretty decent list of vitamins and minerals on their label too, but I wouldn't feed that to my worst enemy.