can b12 injections cause headaches I've had a migraine since Sept 4th. I took a injection that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one Vitamin B-12 5000 mcgInjection Size:20mg Metabolic & Body Composition Research

can b12 injections cause headaches I've had a migraine since Sept 4th. I took a injection that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one Vitamin B-12 5000 mcgInjection Size:20mg Metabolic & Body Composition Research

Vitamin B-12 5000 mcgInjection

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Metabolic & Body Composition Research

Size:20mg

In congenital pernicious anemia, low serum total B12 concen­trations arise from B12 mal­absorp­tion caused by mutations in a gene (GIF,CBLIF) and defects in the synthesis of intrinsic factor