I have purchased (and they are in their way) the jarrows 5000 sublingual B12. How much should I take and how often. In previous question I posted that my B12 levels have been 180, 226 and 205 over the last 2 months but dr is adamant these are normal with the exception of the first which she said is spurious. I have a haematologists app on 28th but apparently they will look at historical results, I have been off work for 8 weeks and signed off for another 4 but I just get back to normal. Now on SSP and not easy to manage so am going to start taking and hope that makes a difference. I will let the haematologist know what I am taking but need to do something.