Risk factors that should prompt consideration of B12 deficiency include advancing age (reduced stomach acid production), strict vegan or vegetarian diets, pernicious anaemia, gastrointestinal surgery (particularly gastric bypass or ileal resection), long-term use of certain medications (metformin, proton pump inhibitors, H2-receptor antagonists), nitrous oxide exposure (including recreational use), and conditions affecting the gut such as Crohn's disease or coeliac disease
To secure the potency and stability of formulation, weighing machine must work efficiently
I never got diagnosed because it was too late and my health deteriorated fast
Unless the body is deficient, B12 injections are unlikely to increase energy levels or improve performance
[4] In case of accidental large overdose (e.g., someone receives far more frequent injections than prescribed), monitoring for symptoms like flushing, tingling in extremities, or liver enzyme elevations would be prudent