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Still, the comparison is instructive
Poor-quality peptides may contain contaminants, incorrect concentrations, or degraded product that could increase side effect risks or reduce efficacy
For further information regarding B12 deficiency, see:
Since multiple species of Propionibacterium produce no exotoxins or endotoxins and have been granted GRAS status (generally regarded as safe) by the United States Food and Drug Administration, they are the preferred bacterial fermentation organisms for vitamin B 12 production
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