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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 Vitamin B12 IV Therapy: Benefits & Uses Reset IV How Long Does It Take for B12 Shots to Work Fast? Headache After B12 Shot: Why It Happens & What to Do Can B12 and Biotin Cause Acne? Emilia Nutrition
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