For clarification purposes, I don't take an iron supplement-multi-vit. or acid reducing drugs. I do take Vitamin D, thanks to you, Mrs. D. and this website. Would calcium interfere with B-12 absorption first thing in the morning? Then at night before bed?? Just trying to sort it all out . . . . thanks. Also, I want to let you know that I appreciate you all- I am still looking for a physician that I trust since our move, and I believe you guys know more than most docs, so thank you for your patience with my questions-and ignorance. Julie