bad reaction to b12 injection Side Effects of (Common and Serious) Vitamin B12 Injection Side Effects
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Use of CDT-4 is limited to use in programs administered by the Centers for Medicare & Medicaid Services (CMS)

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Neurological and Other Adverse Effects In rare cases, vitamin B12 injections have been associated with neurological side effects, particularly in infants undergoing treatment for severe deficiency

It is difficult to self-inject in this spot, so usually a trained spouse, friend or healthcare professional is needed for a shot of B12 in your arm

Unlike tablets, which have to pass through your digestive system, an injection goes straight into the bloodstream