My son is taking B-12 nasal spray on a monthly basis-he started last month. He had surgery in spring of 2007 and part of his terminal ileum was removed and resected. This is apparently the area where B12 is absorbed and his levels have been slowly dropping over the past year. When the body can no longer absorb B12 in the small intestimne it has to be taken in a form that goes directly to the bloodstream-up until recently shots were the only option.
My son reported that he felt almost instantly better within less than an hour of taking the nasal spray-headache and fatigue gone. He finds this much more convenient than going for monthly injections. I hear it can be quite pricey but we are fortunate to have insurance making our copay only 30.00 a month.
Hope that helps
Sincerely,
Ramona