when are vitamin b12 injections needed Do You Need a Prescription for Injections? How Can Vitamin B12 Shots
Description
Heavy Drinking More than moderate levels of alcohol consumption can significantly reduce vitamin B12 absorption and may deplete bodily stores

doi:10.1016/s0140-6736(78)92379-6

(More information) Vitamin B 12 deficiency is commonly associated with chronic stomach inflammation, which may contribute to an autoimmune vitamin B 12 malabsorption syndrome called pernicious anemia and to a food-bound vitamin B 12 malabsorption syndrome

Phys Rep

Even if you do get a Doctor to order your Vitamin B12 level they may still say its normal or insist that taking Vitamin B12 is unnecessary and unlikely to help

S2CID 24097516
