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The product is manufactured under USP and cGMP standards at Pfizer-operated facilities
Testing b12 levels during treatment provides the best way to identify any individual decline rather than assuming everyone needs supplementation
They are essential in avoiding congenital brain and spinal cord disorders
Whether twice-daily dosing produced better outcomes cannot be determined from self-reported data alone
US$ 21.13
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US$ 29.82
US$ 20.45
