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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 Why Do I Feel Worse After My B12 Injection? Understanding Post Injecti Oxford Origins Compounded Methylcobalamin (Vitamin B12) Injection, 5mg mL Compounded Hydroxocobalamin (Vitamin B12) Injection B12 Injections
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