Taking B12 after food is wasteful. It won't be absorbed, unless you have good intrinisic factor. If you had good intrinsic factor, you would not be so low.

So any oral B12 you do ...empty stomach only. Take all 4 tablets in the morning...just chew and swallow with water. Wait at least 45 minutes before any food at all.

Bcomplex needs to be taken because B6 is activated by pyridoxal kinase which requires B2 (riboflavin). Riboflavin is difficult to get from food. The B's work together as a rule.

260 is too low for health. You need to be at 400 minimum and with neuro symptoms, higher than that. Closer to 1000.

Lab ranges in US are wrong...outdated. Get rid of your doctor who said you were normal. Fire him!

If you take 4000mcg methylcobalamin (active form) daily in the morning, you should be above 500 within 3 months. You can purchase methylB12 online for pennies a day.

This is my B12 thread. I've collected all the information you need to improve your situation, but you DO need to read it.
http://neurotalk.psychcentral.com/thread85103.html