Vitamin B 12 Injection, 1,000 mcg mL at Tractor Supply Co Vitamin B12 Injections Vie Aesthetics Alcohol and Vitamin B12 absorption: 5 things light to heavy drinkers should know Experiencing any of these symptoms? B12 supplementation might be right for you. Some causes of low B12 are diet, alcohol use, certain diseases like Chrohn's and Celiac Disease, and Gastric Bypass surgery, Back on the 14th November last year I posted an item about the newspaper reports of the sad case of a lady who died following an injection of Vit B12 and there