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Description
Quality can vary significantly between different brands, depending on the form and the manufacturing process
Below are the benefits experimenters report many favorable outcomes

People with Leber hereditary optic neuropathy should not receive cyanocobalamin

Quick Take 2: Too much B12 in supplements can interfere with metformin, anti-seizure drugs, proton pump inhibitors like omeprazole, and some antibiotics like tetracycline

Joel B Mason, TuftsUSDA Human Nutrition Research Center on Aging, Boston, MA, USA
