There's 400mcg of B12 in the B Complex Plus, which is 16,667% of RDA. Most people shouldn't needs more than that, but if you're having trouble absorbing B12 through the gut route to keep the blood level up, then you might want to try a sublingual B12.
Try Hardy’s daily essential nutrients. It will replace all other vitamins and minerals all in one supplement and it has been really effective for my husband.
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