how long for vitamin b12 injection to take effect Does Work? Timeline & Signs How Long Does It Take

While still considered an experimental research compound , its growing use in fitness and wellness circles stems from its unique mechanism of action , which well break down in the next section

A patient with unexplained fatigue should be worked up, not injected masking a B12 deficiency of unclear cause, or an unexamined thyroid problem, with a monthly shot is a real clinical risk

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Insert the needle at a 45-90 degree angle depending on how much subcutaneous fat exists at the site

So, if your vitamin B12 deficiency is due to an autoimmune disease in which your stomach doesn't make intrinsic factor, supplements might not work for you, and you will need injections

Oral B12 supplements, if prescribed, would incur standard prescription charges unless the patient is exempt