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Headache After B12 Shot: Why It Happens & What to Do Vitamin B12 deficiency: Causes, symptoms, treatment Can a B12 Deficiency Make You Feel Like You're Dying? Vitamin B Deficiency: Symptoms, Causes and Vaccine Teddington 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
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