headache after vitamin b12 injection

headache after vitamin b12 injection I've had a migraine since Sept 4th. I took a that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one b12 injection triggers migraine Migraine

Name: headache after vitamin b12 injection I've had a migraine since Sept 4th. I took a that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one b12 injection triggers migraine Migraine
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Description

The answer is, absolutely not

In the alkaline environment of the small intestine, R-proteins are degraded by pancreatic enzymes, freeing vitamin B 12 to bind to intrinsic factor (IF), a protein secreted by specialized cells in the stomach (parietal cells)