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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 Can Vitamin B12 Shots Help You Lose Weight? Science & Myths Explained What Does A Vitamin B12 Injection Do Can a B12 Deficiency Make You Feel Like You're Dying? Vitamin B12 Benefits and Best Sources
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