If I were you, I would take a B complex (I would look for one that has better doses than that one appears to have), a multi-vitamin, and I would take 5000 mcg methylcobalamin per day.

But I would take the methylcobalamin alone, not with any other supplements. And to get the most out of it, I would take it without food.

Make sure you are getting iron-rich and potassium-rich foods.

And I would do a lot of reading on this forum, for nutrients especially good in supporting nerves.

rose