can b12 injection give you a headache I've had 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 Common & Rare Side Effects
Common & Rare Side Effects of Vitamin B12 Injections Signs You May Have a B12 Deficiency How Quickly Does a B12 Shot Work? Benefits & What to Expect What Does A B12 Deficiency Headache Feel Like
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