b12 injections not working chronic fatigue Vitamin Injections: What You Need To Know Frontiers | Open Trial of

Ask where they source their compounds

People over 50 years of age may show neurological changes due to vitamin B12 deficiency, resulting in an increased incidence of nervous and mental disorders among the elderly

Research suggests that it can

long-term effects on NAD+ metabolism, liver function, and cardiovascular health are unknown

Often, people will notice the effects of B12 injections within 24 to 72 hours after their first dose

You may feel more energetic after a shot, which can lead to small behavior-driven changes like being more active, but the injections themselves are not a proven method to burn fat in people who are not deficient