benefits vitamin b12 injection What are the of injection? Do B12 Injections Help with

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Those most at risk include vegans and vegetarians, people with digestive conditions such as Crohn's disease, coeliac disease or IBS, those taking long-term metformin or proton pump inhibitors, older adults whose ability to absorb B12 through the gut declines naturally with age, those with pernicious anaemia, and anyone with a history of chronic alcohol use

For example, vitamin B12 levels in a multivitamin may differ from those in supplements that contain vitamin B

NHS guidance on vitamin B12 says theres not enough evidence to show what the effects may be of taking high doses of vitamin B12 supplements each day, and therefore you should not take more than has been advised by your doctor