"Association of biochemical B 1 2 deficiency with metformin therapy and vitamin B 1 2 supplements: the National Health and Nutrition Examination Survey, 19992006"
Results Getting the proper amount of B12 in your system can have you seeing a number of benefits, like less fatigue, better sleep, improved nerve function, optimized memory function, and so much more
[1] [6] Severe deficiencies may include symptoms of reduced heart function, suppression of bone marrow, as well as more various severe neurological symptoms possibly including sensory loss, abnormal balance and reflexes, memory and consciousness impairment, smell and taste problems, depression, irritability, confusion, and psychosis
B12 injections are often better than taking oral vitamins because they are absorbed faster and work directly
Oral Supplements: Which Is Better