Observed effects in human trials Reported adverse events across the IV and oral trials included headache, fatigue, dizziness, nasopharyngitis, diarrhea, flatulence, increased appetite, nausea, and back pain
Just did my first shot today
Unfortunately, chances are that vitamin B12 deficiency has already harmed your nerves by the time you experience symptoms
Parenteral administration of vitamin B12 effectively and promptly replenishes B12 stores
Factors such as your metabolism, genetic predisposition, lifestyle habits (like diet, exercise, and sleep), and individual response to B12 can all influence the timeline for experiencing improvements