vitamin b12 injections headaches I've had a migraine since Sept 4th. I took a 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
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doi: 10.1038/s41598-018-26882-8

Anecdotal evidence suggests that people who receive B12 injections before or after drinking report feeling more alert and less fatigued

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