My program requires us to go to support groups. I am pre-op with no surgery date yet. I am just getting started but at this first support group they had a rep there from a pharmaceutical company. She told us about a B12 nasal spray and said our physician would prescribe it for us and depending upon the copay you might not pay anything for it. With our program they do a mail order prescription but basically it's one nostril per week and keeps your B12 levels at a very steady level so your not depleting what is stored in your body. She also mentioned that once you deplete and start having symptoms it's harder to get your levels up and they are finding the symptoms stick around. I haven't read much yet on the study to support this but the spray is called NASCOBAL Nasal Spray. The company was Endo Pharmaceuticals and they also have this kit that comes with vitamins, iron, calcium and the spray the copay could be 0 or 25 per month depending on your insurance. I thing they call it Nutrition Direct. Hope any of this info helps!