Mainly found in animal products such as meat, poultry, fish, eggs, and dairy
Socha, Daniel S et al
Patients with a history of chronic pancreatitis, pancreatic cancer, or other significant pancreatic disorders may not be suitable candidates for this therapy
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
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Many individuals benefit from weekly or bi-weekly treatments to keep their energy levels steady