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Most B vitamins at Costco use low quality synthetic forms like B9 (folic acid) and B12 (cyanocobalamin) and are loaded with fillers and junk ingredients , Thats why I recommend @sportsresearch Kirkland Signature B12, 5000 mcg, Quick Dissolve Cherry Flavor , 300 ct Costco Nature Made Vitamin B12 1000 mcg, 400 Softgels Kirkland Signature Quick Dissolve B 12 5000 mcg., 300 Tablets Costco Nature Made Vitamin B12 1000 mcg., 400 Softgels Costco
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