out to find an adequate dose for this age bracket, and it seems most need at least 650 mcg to 1,030 mcg a day, so I recommend 1,000 mcg of cyanocobalamin a day for everyone after age sixty-five, ideally as a chewable, sublingual, or liquid supplement.2849 Absorption is boosted when B12 mixes with saliva, because we secrete a B12-binding protein
