Hello @robyng, I would like to add my welcome to Connect along with @daisy22 and others. You might find the following discussion helpful as Metanx is a prescription Vitamin B supplement that neurologists sometimes prescribe for neuropathy patients.
--- Metanx: https://connect.mayoclinic.org/discussion/metanx/.

There are also quite a few other discussions on vitamin B that you may find helpful. Here's a search results link for vitamin b - https://connect.mayoclinic.org/search/?search=vitamin+b