The technical and Material Safety Data Sheets (MSDS) of most man-made vitamins reveal a host of added ingredients that are not declared on most vitamin packaging or pet food ingredient panels. These ingredients are mostly preservatives and processing aids.
Man-made fat soluble vitamins are very volatile and most are often preserved with BHT. Others include, but are not limited to, rice hulls and corn cob as carriers, and sodium aluminum as an anti-caking agent. Other processing aids identified are mineral oil, sucrose, rice or soy proteins, and modified starch.
To view a more in depth article on this subject:
http://www.natureslogic.com/pdf/HowNaturalisNatural.pdf
Below are several pdf’s of vitamin or mineral MSDS that can be reviewed declaring these other substances.
Vitamin A - preserved with BHT (5%)
http://www.natureslogic.com/pdf//MSDS/VitaminA.pdf
Vitamin A & D3 - preserved with BHT
http://www.natureslogic.com/pdf/MSDS/VitaminD3.pdf
Vitamin K3 - Other processing aids
http://www.natureslogic.com/pdf/MSDS/VitaminK3.pdf
Ascorbic Acid - incompatabilities with other ingredients
http://www.natureslogic.com/pdf/MSDS/AscorbicAcid.pdf
Potassium Chloride - other interesting ingredients
http://www.natureslogic.com/pdf/MSDS/PotassiumChloride.pdf
Nature’s Logic is the only all natural pet food that adds no chemically synthesized vitamins, minerals, or amino acids into any of its products. All nutrients, including vitamins and minerals in Nature’s Logic products, come from safe whole foods.