My doctor and I are still trying to figure out what's wrong with me. I have a lot of symptoms that sound like B12 deficiency but my blood results show that I have about 2 years of B12 in my liver and my B12 level was just over 500 (can't remember exactly). She said my folate was a little high and I have parietal cell anti bodies and thyroid anti bodies. I am going for more bloods tomorrow, including intrinsic factor this time.
I have been taking B12 5000mcg for a few months. When I take a B12 supplement (tablet or sub-lingual) they work for a few days then they stop working and my symptoms come back. I asked her why would I feel better for a few days and then it stops, she said "placebo effect?" I was not impressed.
I am wondering why do I feel like I have a B12 deficiency when I have plenty of it in my body? Does anyone have any ideas?