can b12 injections cause nausea Are Shots Safe? Royal Palm Beach Medical Group Vitamin B12 Side Effects Stomach:

Like the energy this shot gives you

Mitochondria your cells energy centers rely on adequate NAD+ levels to function optimally

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In cases of severe deficiency, a course of injections may be given over several weeks before transitioning to maintenance treatment

Certain medications The following drugs can reduce levels of vitamin B12 in your body: Antibiotics -- long-term use can lower vitamin B levels generally Anti-seizure drugs Chemotherapy medicines, especially methotrexate Drugs used to reduce stomach acid, like H2 blockers (Pepcid AC, Tagamet, Zantac) and proton pump inhibitors (Nexium, Prevacid, Prilosec) Metformin (Glucophage) -- taken for diabetes Colchicine -- taken for gout Some cholesterol-lowering medications Other causes You're over 65

These typically resolve within the first week