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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? Causes & Management Bolt Pharmacy Headaches and exhaustion after B12 Pernicious Anaemi Instructions for B12 Injection Alan Health Vitamin B12 Injections: Hot Shots? Full Guide PA Relief
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