I'm wondering if I should take a B vitamin at all as my last blood test in January showed high levels of B12. 1694 to be exact.

I just got the CoQ10 from my chiropractor. He did not have any Thiamine or Benfotamine in stock so I'm off to GNC. Do you think that they have a good enough quality brand? If not do you have a brand recommendation? Same with the acetyl carnitine and the Stablizied R-lipoic acid... any favorite brands? I hate to wait for something to come in the mail but I will if you deem GNC brands to be junky.

Thanks again for your time & the links!!