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Oral supplements contain cyanocobalamin, which breaks down in the body into methylcobalamin and the poison cyanide
If your levels are already normal, a shot mainly keeps you topped off rather than creating a big surge
Keep in mind this is one marker, and lowering it has not by itself been proven to prevent heart attacks or strokes
When you are ready to receive your B12 injection, you will need to clean the area where the shot will injected and then remove the cap from the syringe
(8) Long-term vitamin B12 deficiency can cause permanent nerve damage and neurological symptoms
A B12 deficiency can happen due to age, low absorption, low IF levels, or diet
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