B12 1000mcg is equal to 1 mg. Take 1 mg daily x10days. It will make low B12 normal. If b12 is normal it will have no effect . It will be passed out in the stools - not absorbed. No side effects. If you use less than 1mg daily - the effect is lost . It will not make the low b12 normal.
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I purchased these for my mother who had read that vitamin B12 would be good for her. She is pleased with the tablets and is now on her second lot. She has tried various makes and prefers this one.
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The b12 tablets are good quality and seem to really help had 2 lots now so recommended. Good value and arrived on time .
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Well its too soon to state its good but im not having any bad or adverse effects from it ...
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Excellent value Work really well
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