I am off to bed but I can't find anything in your link that says it contains bovine bile.
I did find this : Glyocholic acid, sodium salt is manufactured from the steroid, cholic acid. It is a nature equivalent compound, chemically identical to the natural steroid produced in the liver of many animal species

I think Sirrhoko that glyocholic acid can be chemically reproduced and this is what is contained in this Vit K. I feel quite confident that if the manufacturer states to 3 separate people that there is no bovine content then it would be correct.

But, perhaps Yael's mum has come up with something more.