Hi, I'm new here!

I'm wondering about vitamin B12 (specifically methyl cobalamin) and mercury.
I'm pretty sure that it's one of the recommended supplements to take if you have
issues with mercury or amalgams. However, I came across an article elsewhere
warming never to take any if that's the case - something to do with that methyl group
attaching to mercury and forming methylmercury. I saw another article warning against
B12 in general, even the non methylated sort.

Now I'm a bit confused and worried - any thoughts on this topic?