Yes, this is the same Hills I was referring to ...they have Science Diet, and their line of prescription foods. I am not a vet or vet tech, but this is a for growth food versus what say their z/d is prescribed for and which because it worked for myJoshua, I loved...this food is, imo, junk. I would NOT feed a food that uses the least quality protein source available - by-product meal, nor one that has as it's second most prevalent ingredient, ground whole corn, nor one that uses pork fat (pork is not recommended for cats as I understand). For a healthy, growing kitten that are foods out there with far, far superior ingredients!
I can give you some links later on carbs/food allergies and a source that discusses what is in pet food/definitions etc.