do b12 injections cause headaches The Weird Connection Between Deficiency & Migraine I've had a migraine since
I've had a migraine since Sept 4th. I took a B12 injection that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one How Long Does It Take for B12 Shots to Work Fast? Vitamin B12 levels low? My patient would get a headache every morning, not knowing it was a red flag for deficiency Medinaz Vitamin B12 Deficiency: Vitamin B12 deficiency is a nutritional or absorption related disorder leading to impaired DNA synthesis and neurologic dysfunction, commonly presenting with megaloblastic anemia and neuropsychiatric symptoms
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