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Pyrroloquinoline Quinone

Meaning

Pyrroloquinoline Quinone, commonly abbreviated as PQQ, is a unique redox cofactor with vitamin-like properties, naturally present in various plant-based foods. It functions as an essential nutrient for cellular processes, particularly those involving energy transfer and antioxidant defense, though it is not formally classified as a vitamin for humans due to its biosynthesis by gut microbiota.