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Natural Factors, B12 Methylcobalamin, 1000 mcg, 90 Chewable Tablets - iHerb.com

Dietary Supplement Biologically Active Form of B12 Support for Nerve Function, Energy Production & Red Blood Cells Purity & Potency Guaranteed Natural Factors Methylcobalamin is active immediately upon absorption, while other forms (e.g., cyanocobalamin ....

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