after taking vitamin b12 injection what happens How Quickly Does Shot Work? Does It Help to Lose Weight? Vitamin B12 shots: Uses, benefits,

Best For: Anti-aging and increasing energy, especially for fatigue or chronic health issues

It is often given once a week or as directed by a healthcare provider

Vitamin injections are highly useful in such circumstances and can aid you to access all the important nutrients at suitable levels

How quickly does B12 injection work depends on how low your levels were beforehand

Early haematological response begins with reticulocytosis (increased production of immature red blood cells) typically by day 3-4 of treatment , particularly with injectable forms, though the full resolution of symptoms may take several weeks to months