what is the side effect of b12 injection Common & Rare Effects Vitamin Injections What Are B12 Injections? Uses,

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It may cause nerve damage, and studies show low vitamin B12 levels may be a risk factor for problems in cognitive function such as dementia and psychosis

The absorption of B12 is a complicated process but the two main components that are needed are the Hydrochloric acid in your stomach, which releases the B12 from food, and a protein called Intrinsic Factor which is produced in the lining of your stomach and which enables the absorption of B12 in the Ileum

There have been postmarketing reports of renal impairment, acute kidney injury, and worsening of chronic renal failure, which sometimes has required hemodialysis, in patients treated with GLP-1 receptor agonists