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However, there is some People with kidney disease may also experience a buildup of cyanide in their body due to the formulation of B12 cyanocobalamin, a synthetic form of B12 found in some vitamin B supplements

This varies depending on your deficiency and symptoms

Neurological recovery, if present, can take longer and may not fully reverse if deficiency was severe and longstanding

This is the most common question we hear, and the honest answer is: it depends on your diagnosis

You can also get vitamin B-12 deficiency if you follow a vegan diet (meaning you dont eat any animal products, including meat, milk, cheese, and eggs) or you are a vegetarian who doesnt eat enough eggs or dairy products to meet your vitamin B-12 needs