My B6 was also elevated. I think it contributed to the severity of my SFN.
I did not take it everyday and hadn't even taken it for a while before being tested. I will never know how high it really got, but I stay far away from any supplement with B6.

David,
Keep in mind that it takes much longer than 3 months for nerves to heal.
From what I understand, some people have trouble absorbing this properly.