migraine after b12 injection Can Vaccines Cause Headaches or Migraine? Take a Shot at Migraine:

Cognitive changes such as difficulty concentrating, memory problems, or mental fog may also emerge

[Google Scholar] LeBlanc J

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Mothers who also took antiretroviral drugs for HIV infection had vitamin B 12 milk levels similar to control.[49] Based on these reported milk levels, an exclusively breastfed infant would receive an extra 0.016 mcg/kg daily of vitamin B 12 from the daily maternal supplemental 2.6 mcg

So convenient to be able to order from home, and receive my medications, well prepared and packaged

Blood work can confirm whether you have a B12 deficiency or not