for your responses, there is a lot to take in. First off I will see if I can get Methylcobalamin in UK, I am sure that I can or at least I should be able to buy it on the internet.

The dolomite says it is Calcium 130 mg and magnesium 78 mg, but given what you have said about contamination I am not going to take this. The zinc is supposed to be good for the immune system that is why I thought I would give it a go.

Should I maybe stick to a multivitamin and the b12 replacing this with the Methylcobalamin if I can get hold of it?

There is so much to learn about this and my brain is still in a fog trying to take in the fact that I have PN