Menadione Sodium Bisulfite Complex

I just bought a canned cat food that has the above complex put in it. I do recall years back that it is not good to put in canned cat food. Is that true. Guess its a form of Vitamin K. Does anyone know!

it is a form of viatmin K ... the jury is out on the safety, ie it s use has never been tested for pet foods( from my understanding..It is shelf stable which does give advantages over other forms, but it is synthetic... I am suspisous of companies that dont put what there using and say vitamin k or dont mention it more. I use stuff with it as long as IT is not high on the ingrediants.. IE current food this is second to last..