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Doctor’s Best PQQ with?BioPQQ? is a coenzyme that promotes mitochondrial survival and energy production.?BioPQQ? contains Pyrroloquinolone Quinone, a polyphenol nutrient that is an antioxidant and cell regulator that has important properties in cell signaling.?PQQ enhances mitochondrial biogenesis and?nerve growth factor and protects brain cells for oxidative stress.?PQQ is involved in cell signaling for cell proliferation, mitochondriogenesis, and oxidative metabolism.