[cattitude (Premo)]

Originally Posted by pixiegirl

Vitamins regulate the metabolism and assist the biochemical processes that release energy from digested foods. There are two types of vitamins: water-soluble that must be replenished daily, such as Vitamins C and B-complex, or fat-soluble that are stored for longer periods of time in fatty tissue and the liver, such as Vitamins A, D, E and K. At the same time there are two groups of vitamins: synthetic and natural. Synthetic are produced in laboratories to mirror their counterparts found in nature. Natural vitamins are derived from food sources. Chemically there are no differences, however the synthetic supplement contains only the isolated vitamins, which works well in a deficiency situation. Natural supplements often contain other nutrients not yet discovered and may offer more benefits as with whole foods.

http://www.dogfoodproject.com/index....badingredients

Menadione Sodium Bisulfate
Vitamin K3, synthetic vitamin K.

Feed grade. Also listed as Menadione Dimethyl-Pyrimidinol Bisulfate, Menadione Dimethyl-Pyrimidinol Bisulfite, Menadione Sodium Bisulfate Complex, Menadione Sodium Bisulfite and Menadione Sodium Bisulfite Complex.

Unnecessary ingredient in dog food. This synthetic version of vitamin K has not been specifically approved for long term use, such as in pet food. It has been linked to many serious health issues. More details.