They use pet grade meat sources, which means they are rejects from slaughterhouses and unfit for human consumption due to disease and such. They use buckets of carb sources that are crap junk food for dogs, not to mention the 3 biggest culprits in food allergies in dogs (corn and corn gluten meal, poultry fat, and wheat and wheat flour). Nutro also adds menadione to their kibble, which is just bad bad bad. Do a google search on "menadione dog food". They add near useless (poorly absorbed) ingedients (oxides and sulfates) to mask the diets nutritional insufficiency and fool the public into thinking their pet is getting a balanced diet. For someone always trumpeting the value of being nutritionally aware and how important proper vitamin and mineral intake is to health, I'd think you'd feed your best friend a better quality food so that you don't have to supplement til the cows come home (but only of they are slaughterhouse diseased rejects).
For $5 more a 35-40lb bag, you could feed your pet a much higher quality diet, and a bonus is that it will last longer as there are less fillers, so less is needed to be fed to meet the same nutritional need. And your dog will poop less (crap in crap out).
Vitamin C will NOT cure hip dysplasia. Hip dysplasia is a deformation of the hip joint, most often hereditary, that worsens with age due to abnormal wearing because of the malformation. The head of the femur does not ride in the hip socket correctly because the socket itself is malformed, often too shallow or misshapen. Vitamin C won't do a single damn thing for that. I have some snake oil I can sell you, and some wonderful dried frog pills that cure gout, zits, tennis elbow, and chronic halitosis. The bottle says "natural" on it, so you know it MUST be good!
The place the site you listed got their crap was from a book written by this genius (and I'll actually give you the link to my source!!)
http://www.dianestein.net/DianeSteinBio.htmDiane Stein is the author of 25 books--so far--on Women’s Spirituality and the Goddess, Wicca, psychic techniques, metaphysics, healing and Reiki, natural remedies for people and pets, crystals and gemstones, and karmic release
...
she holds a Bachelor of Science in Education and English Literature from Duquesne University (1970) and a Master of Arts in English Literature from the University of Pittsburgh (1972).
Her bibliography
http://en.wikipedia.org/wiki/Diane_SteinEssential Reiki: A Complete Guide to an Ancient Healing Art
" Essential Reiki Teaching Manual"
The Women's Book of Healing: Auras, Chakras, Laying on of Hands, Crystals, Gemstones, and Colors
All Women Are Healers: A Comprehensive Guide to Natural Healing
The Natural Remedy Book for Dogs & Cats
Natural Healing for Dogs and Cats
On Grief and Dying: Understanding the Soul's Journey
We Are the Angels: Healing Our Past, Present, and Future With the Lords of Karma
Essential Energy Balancing I: An Ascension Process
Essential Energy Balancing II: Healing the Goddess
Essential Energy Balancing III: Living With the Goddess
Diane Stein's Guide to Goddess Craft
Reliance on the Light: Psychic Protection with the Lords of Karma and the Goddess
Psychic Healing With Spirit Guides and Angels
Essential Psychic Healing: A Complete Guide to Healing Yourself, Healing Others...
A Woman's I Ching
The Goddess Celebrates: An Anthology of Women's Rituals
The Goddess Book of Days: A Perpetual 366 Day Engagement Calendar
Healing With Gemstones and Crystals (Crossing Press Healing Series)
Women's Spirituality Book (Llewellyn's New Age Series)
Healing With Flower and Gemstone Essences (Healing Series)
The Holistic Puppy
The Natural Remedy Book for Women
Lady Sun & Lady Moon: Poems
Prophetic Visions of the Future
Dreaming the Past, Dreaming the Future: A Herstory of the Earth
All Women Are Psychic (Women's Psychic Lives)
Casting the Circle: A Women's Book of Ritual
Pendulums and the Light: Communication With the Goddess
Innocence/Experience: Fiction
I see not a damned thing that qualifies this quack to give nutritional advice to slime mold, let alone a mammal.
dysplastic hips (note the deformation of the socket in how shallow it is and how the femoral head barely rides within the socket)
Normal hips (note how the socket itself is deeper and the femoral head seats itself within the socket much better)