how long does it take for b12 injection to work a lipo shot work? Vitamin B12 Injections: What They

Most reports describe first changes at weeks 4 to 6, with peak effect at 8 to 12 weeks

Because vitamin B12 is water-soluble, your body naturally eliminates any excess, making this a low-risk solution for most people

It is important not to self-treat with high-dose B12 supplements before seeing your GP if you suspect deficiency, as this can interfere with diagnostic blood tests and potentially mask underlying conditions such as pernicious anaemia

Vegetarians and vegans are particularly at risk of this deficiency, as they do not consume animal-derived foods that are rich in Vitamin B12

Later, you might only need one a month