Yes, and this is common practice in the preclinical literature
In the primary healthcare setting, the most commonly seen causes of vitamin B12 deficiency are related to abnormalities of digestion (atrophic gastritis, achlorhydria or the consequences of gastrectomy) or absorption (autoimmune pernicious anaemia, chronic pancreatitis, Crohns disease, the effect of medications that alter the mucosa of the ileum, or the consequences of surgical resection), and, to a lesser extent, a lack of exogenous supply
Your liver is the organ responsible for removing fat and toxins from your body, so if it is healthier, it will work better for you
If you have any of the following conditions, you should be aware that its more likely that you could develop a vitamin B12 deficiency: This is a condition where the lining of your stomach has thinned