do b12 injections cause headaches

do b12 injections cause 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 B12 Deficiency - Hematology &

Name: do b12 injections cause 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 B12 Deficiency - Hematology &
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Side effects that occur less frequently are lightheadedness, nausea, fatigue, headache, dizziness, warmth, or flushing

& Fasano, A

Archived (PDF) from the original on 7 January 2020

When total B12 measurements are unreliable, your doctor may request additional tests such as holotranscobalamin (active B12), methylmalonic acid, or homocysteine to assess your true B12 status more accurately

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