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Amasheh M, Andres S, Amasheh S, Fromm M, Schulzke JD: Barrier effects of nutritional factors
Once a sealed vial passes its printed expiration date, replace it
Some research advises those older than 50 years to meet their RDA mainly by consuming foods fortified with vitamin B12 or a vitamin B12-containing supplement
Do not freeze the vial, and do not use the solution if it looks cloudy, discolored, or contains visible particles
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