I'm at a loss knowing what to do. I've had 2 critical health situations in the past 3 months putting me in the hospital through the ER. Just prior to this, I had some extensive labs done at my request due to health issues for the past 3 years. I just knew after all I've had since then, that I had to be deficient somewhere and sure enough, I am/was. My B12 was 148 on April 15th and 280 on June 7th, 2010, not NEARLY what the level should be ! Reaching the 280 was by taking 2000 of B12 subligual a day. My PCP said that clearly I was not absorbing it as I should be and that I should take B12 shots. He said for me to have 1000 every 2 weeks. I feel this is simply not enough often enough. At the least, I thought I should be taking 1000 a day. Another source has suggested to me that I take 10000,cyan daily. If this is a tablet form, I don't think it's going to be any better than the sublingual method. My Questions are: 1. What is Cyan? 2. Is Cyan available in injectable B12? 3. Do I even want to take *Cyan* ? 4. What daily dose might be a reasonable one to raise my levels to at least 900-1000? 5. If I take a large dose daily, should it be divided up in segments of say, every 4 hours or is it ok to take a large dose at one time... will the body use it or toss off most of it. I'll have more questions but let's see what I can learn from this post. Thanks in advance. I'll appreciate whatever help I'm given.