Hello Dr. Rynne, I am wondering if I have a B12 deficiency. This past month I have suffered from vertigo for 3.5 weeks with medicine for nausea and dizziness. Additionally, in the two months prior I suffered from vertigo for one week each with no RX. My symptoms are incontinence, forgetfulness.........and some other symptoms I can t remember right now! I take metformin for diabetes, metoprolol for increased BP and calcium for osteoporosis - along with a multi-vitamin. If I do have a B12 deficiency, what do I need to do? Thanks for your answer. Myrna Mercer