can b12 injections delay your period I got a injection and have not gotten my after it. Is this normal? I didn't get the injection for low b12 How Long Does It Take

You are going to have to give yourself three injections for the full dose of B12

How Long Does a B12 Injection Last in Your Body

The typical Vitamin B12 dosage is 1000 mcg

It is a designation used primarily by the FDA (Food and Drug Administration) for products, often in vitro diagnostic (IVD) components like reagents or instruments, that are in the laboratory research phase of development and are not intended for clinical diagnostic use

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