Its a matter of skippering between the two
Experts are studying it's natural anti-depressant effects and use in treatment of bi-polar disorder, OCD, bulimia, ADHD, Autism, schizophrenia, and Alzheimers disease
In a recent review (2018) by the famous Cochrane Institute, it was reported that studies which had been published on this topic only provided very low-quality evidence that oral B12 is as efficacious as intramuscular B12
Anemia may cause weakness, fatigue, dizziness, and a rapid heartbeat
Others who might be prescribed B12 shots are those at the highest risk for a B12 deficiency, including: Vegans, since vitamin B12 is found only in animal products People ages 60 and up since their bodies don't absorb B12 as efficiently People with Crohn's disease or pancreatic disease, since they prevent nutrient absorption People who had weight-loss surgery, which decreases B12 absorption People with an eating disorder People with HIV People with diabetes Since a mild B12 deficiency might not cause symptoms, it can go undetected for years since levels are not checked during routine blood work