Earlier this year, we spoke about premixes in pet foods and how these can harm your dog. We stated: ”There is something inherently wrong with most processed foods that pet owners are unaware of. The heating and processing that these foods undergo create a fundamental change that could have dangerous ramifications – it renders the food essentially dead. What goes into the good is not what comes out once it is heated, sterilized, irradiated and extruded and nearly all dog foods will not meet AAFCO standards once they are heated. As a consequence, the vitamins and minerals must be added back in for the food to pass AAFCO requirements.”

These vitamins and minerals are added to pet foods in the form of something called a premix. On the right is a label from what many people consider a high-end kibble. See those vitamins, minerals and long chemical names that are listed at the bottom? Those very likely came from a premix. If the premix is not added to the food after the heating process, your dog would become ill and under-nourished from eating the nutritionally dead contents. In fact, the food would not pass AAFCO standards.
Premixes are a bad idea for two reasons. One, nearly every premix is manufactured in India or China where production costs are low and standards are even lower. The frightening part is that pet owners can’t tell if the premix in their food comes from China because it does not have to be listed on the label. The only way to know is to phone the manufacturer and ask if the premix is made in the US or overseas. To read more about the safety of premixes, read this article.
The second problem with premixes is that they are manufactured with synthetic vitamins and minerals. These synthetic vitamins are isomers, or isolated forms. Synthetic vitamins do not attach to a protein that the body can understand. The body then sees it as a drug, and the liver has to make it metabolically active. This can cause toxicity in the body.
Older studies done on mega doses of Vitamin C, done by Linus Pauling, have shown that Vitamin C can help prevent colds, and sometimes shorten their duration. However, recent research has shown that long term effects of such mega doses, can affect our RNA, a major part of protein synthesis in our body.
Vitamin E has also been linked to prostate cancer in men. According to a trial including 35,000 men published in JAMA, randomized men given 400 IU/d of vitamin E had a significantly increased risk of prostate cancer (2011;306(14):1549-56). “The observed 17-percent increase in prostate cancer incidence demonstrates the potential for seemingly innocuous yet biologically active substances such as vitamins to cause harm,” the researchers noted. “The lack of benefit from dietary supplementation with vitamin E or other agents with respect to preventing common health conditions and cancers or improving overall survival, and their potential harm, underscore the need for consumers to be skeptical of health claims for unregulated over-the-counter products in the absence of strong evidence of benefit demonstrated in clinical trials.”
Research indicates it is much safer to seek out whole food sources of vitamins for our pets. For example, there are over 10, 000 ingredients in an orange. If you give your dog a supplement with ascorbic acid as the only Vitamin C source, you are eliminating the other 9, 999 ingredients necessary to process the ascorbic acid properly. There are so many factors in whole foods that allow proper usage of vitamins in the body. The main factors are:
- Unknown factors that food gives us. There are ingredients, (like the 10,000 ingredients in an orange) that we do not yet understand.
- Metabolic activity. This allows the vitamin to attach to enzymes that activate it and make it active.
- Phyto nutrients. These are plant source nutrients that allow the nutrients to absorb in the body.
Without these three components, a supplement source is unable to process the vitamin properly, or even not process it at all. Compare the dog food label above to the ingredients of a quality, commercial food: Lamb meat, lamb bone, lamb blood, eggs, lamb green tripe, lamb liver, broccoli, cauliflower, carrot, silver beet (spinach), cabbage, apples, pears, lamb hearts, lamb kidneys and garlic.
Which food do you think is safer for your pet?
















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What about pre/pro-biotics, enzymes supplements, like Prozyme and various other brands ? The powder or chewable pill forms.. I have a young dog that has some digestion issues, its on premium kibble and some premium canned, plus missing link. I thought the pro biotics were to help food digestion because of some of the points made here.. I also thought that raw diets would not need them because there more natural. But I know someone who only feeds good raw diet and she believes the pro biotics have to be added to raw diets.. If there more natural why do they need that added? I get the impression they also can come from different sources but I don’t know if they also have that USA or overseas issue with them?
If not feeding green tripe, which is rich in digestive enzymes and probiotics, I would consider feeding probiotics to a raw fed dog. But, green tripe would be a better, more natural source. The best way to find out the source of your supplements is to call the manufacturer.
I wish these e-articles had the references used to create them same as in the actual magazine. I believe in natural but sometimes knowing where those studies are give some good backup so you can keep the faith, and get your friends to believe as well!
We simply haven’t the manpower to fully reference our online articles. They are designed to get people thinking but the magazine will have the meatier content and the references.
I think you do need to be careful when you quote Big Pharma supplement studies.
The vit E study mentioned, used rac-α-tocopheryl acetate, which is synthetic vit E, which most of the studies use. I would expect readers of this magazine to not only use natural vit E supplements if they supplement, but also those with mixed tocopherols and perhaps even more complete forms.
There are some conditions and situations that do require supplementation, and the key is to do it smartly and with knowledge. Expect, as has been seen recently, more and more studies disputing supplements and what they can do.
Whole food form is almost always best, but sometimes that’s not doable.
additionally Nature’s Logic adds NO synthetic vitamins at all to their foods, not even kibble.
On the supplement route though I have added supplemental vitamins etc to my dogs diets for 27 years and while Rottweilers live on average 7-10 years I have had MANY (25% of all dogs I have produced) live to be 11,12,13+ years
I asked the makers of the foods I use : Natura (who makes Innova, Evo, Healthwise, California Natural and Karma), and Nature’s Logic about sourcing and BOTH do NOT use ANY ingredients from China not even vitamins and minerals. I also asked the raw food company I buy from if they source ANYTHING from China and they (BRavo) said nothing they use is from China
If they purchase their premix from the US however, some of the vitamins in the premix may be from overseas. But most companies are forthright about their sources and if they know where they came from, they will tell you. Pick up the phone and contact these companies for the real story.
What is the name of the quality dog food listed above in the article? I really like the ingredients listed.
I dont no, but for my clients who dont want to feed raw, i recommand Orijen or Acana grain free, made in canada
I feed my kitties raw. Right now we mix, whole chickens (or turkeys), with cow heart (or pork, turkey, chicken, rabbit), livers (chicken, pork, turkey, or beef etc), fresh mixed greens, carrots (or different kinds of squash), eggs, dulce, kelp, apple cider, yogurt, and water. We always switch things out to add variety. Also, we give them whole necks, meat, livers, hearts etc. to strengthen their jaw muscles. What would be a safe food to add for Vitamin C, Vitamin E, Iodine, Omega 3 fatty acids? All the recipes I’ve read say to add supplemental vitamins like these, but I’d rather have them get it through the whole raw foods. I do feed them sardines once to every 2 weeks. Do you recommend any other veggies, fruits, or fish to get these essential vitamins?
Sorry, I don’t know enough about cats to recommend anything. A whole different animal than dogs!
I would like you opinion on Standard Process Whole Food Supplements. Are those also included in what you would consider hard or impossible to absorb? For example I was using Free Range Chicken Egg shells for Calcium source for my two raw fed dogs and occasionally bone in meat. My vet switched my dogs to Calcium Carbonate and Calcifood supplement as well as several other SP Supplements. Zinc Liver Chelate, Spleen, etc. even though I feed organs such as pork spleen and brain, grass fed calves liver, pork kidney, etc. accordingly. Can you tell me if I should continue to rely on supplements or go back to the raw feeding and natural sources?
I’m not a vet but in my opinion from past experiences, Standard Process is an excellent source for whole food vitamins. I think even raw fed dogs need a little
extra boost of nutrients added to their diet.
Standard Process would be one of your better choices. I can’t tell you what to do, but I rely on bones as a calcium source for my dogs.
Yes, we don’t advocate any synthetic vitamins, including supplements and pills. It is best to get them from natural sources. Dogs can manufacture their own Vitamin C but kiwis are an excellent source.
thanks but what I no is that for us or animals
In nature, plants are consumed to get their nutrients. However, the plants today will withdraw most the same amounts of nutrients from the soil, necessitating the addition of supplements. Because of increased stress and pollutants, the dog needs these additional nutrients to maintain health and vitality.
ok now im mix up
my dogs are raw fed and I give vitamin C-E to my dogs and take it my self
Im french so want to be sure, do you say we should not give those vitamines, or you talk only about kibbles?
thanks