does b12 injection interfere with pfizer covid vaccine Pfizer, partner BioNTech say updated shot shows better immune response Covid-19 Vaccine Pfizer: Package Insert

Potassium supplements taken concurrently with b12 injections may theoretically reduce b12 effectiveness, but this interaction rarely causes clinical problems

Tell your doctor or pharmacist if you notice any of the following and they worry you: Active ingredient: Cobal-B12 injection contains hydroxocobalamin acetate as the active ingredient

After my first injection of Pfizer I almost immediately experienced nausea, incredible fatigue, dizziness, shakiness, immense muscle and joint pain all of which are intermittent ~ I never know when Im going to feel like I will pass out although it is intermittent it is still quite disturbing

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