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Importantly, functional B12 deficiency can sometimes coexist with high total B12 levels, especially in kidney disease, and may require additional testing with methylmalonic acid (MMA) or holotranscobalamin if deficiency is suspected clinically

AHK-Cu (Alanine-Histidine-Lysine Copper) is a tripeptide copper complex that targets hair follicle regeneration directly

If you are new to this space, you may want to read our guide on what peptides are used for to establish a baseline understanding

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Excessive supplementation is generally unnecessary and may cause mild side effects such as flushing or irritation at the injection site