Vilgain Vitamin D3

Hello, you write that the capsules are vegan, but what is your source of deca? Thank you

Hello, I have read that D should be taken together with vit. K, otherwise supplementing with vit. D I can get problems (calcification of blood vessels) after some time of taking it. Will you be making D+K as well? Thank you for your comments.

Hello, can I also give it to children? One is 14 and the other is 9,5 years old Thank you

Hello, can the capsule be opened and drunk?