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B12, Biotin, & Glutathione Shot Show Me Younger Why do I feel worse after a B12 injection? CoLaz 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 Vitamin B12 Injection: Energy Boost and Anemia Treatment Mountainside Medical
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