Definition: Menadione Sodium Bisulfite Complex is a synthetic pet food ingredient which stimulates the production of vitamin K in an animal's body. Although it is technically not vitamin K, it is substituted for vitamin K in some pet food formulas, as it is inexpensive compared to sources of vitamin K, such as kelp, seaweed, alfalfa, and green leafy vegetables. Its use in pet foods is controversial, however many pet food experts have come out against it. The FDA has no regulation preventing such use.
Pronunciation: men-uh-dy-own so-dee-um by-sul-fayt com-plex
Also Known As: menadione, sodium sulfate, Menadione Dimethylpyrimidinol Bisulfite, Vitamin K3, Vitamin K Active Substances (VKAS) (
official FDA term),
Examples:
Menadione Sodium Bisulfite Complex is a controversial ingredient used in some cat foods.

