The list of symptoms that may be caused by the deficiency of B12 and folate can run for pages. 

To name a few: constant fatigue, grey hair, mouth sores, tongue swelling, growth problems, pale or yellowish skin unhealthy looking, pins and needles felt around the body, poor mobility – a person deficient in B12 becomes slow and clumsy, dizziness and shortness of breath, blurred and disturbed vision, mood changes, depression and/or anxiety.

Please, click on this product and scroll down to the full description.