These patients will have a difficult time absorbing B12 unless they have appropriate amounts of stomach acid and HCL
B-12 is also important for avoiding osteoporosis, reducing the danger of an eye illness known as macular collapse, avoiding mood swings, avoiding neuron loss, and delivers all-important energy
I have this same question
Sublingual formulations, which dissolve under the tongue, are often marketed as superior to standard tablets, but most of the dissolved vitamin is actually swallowed with saliva and absorbed through the digestive tract similarly to regular oral supplements
Cyanocobalamin is however very straightforward and cheap to manufacture and is particularly stable
Crosses the blood brain barrier to participate in methylation reactions in the brain