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does vitamin b12 injections expire Hi I bought the injectable liquid but there's no use by date on it or how long you have to use it once it's opened. Anyone know the answer? TIA x lack of appetite 5-amino-1mq Capsules Suppliers, Manufacturers, Bottle Type:Cobalt Blue Glass

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This vitamin is essential for: Synthesis of neurotransmitters like serotonin and dopamine Maintenance of nerve cell integrity Formation of the protective myelin sheath around nerves Reduction of homocysteine (elevated levels are associated with cognitive decline) Studies have linked adequate B12 levels to better cognitive performance, particularly in memory, reasoning, and processing speed