From Manufacturer''s Label:Best PQQ with BioPQQ from Doctor''s Best 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.**Gluten Free, Non-GMO, Vegetarian, Vegan.Contains 30 veggie capsules.Manufactured by: Doctor''s Best