PQQ is a recently discovered vitamin-like compound that is essential for various biological processes. Found in foods such as fermented soybeans, green tea, and kiwi, PQQ is known to support mitochondrial health and function. Mitochondria are the energy powerhouses of our cells, responsible for producing adenosine triphosphate (ATP), the energy currency of the cell. By promoting mitochondrial biogenesis — the process by which new mitochondria are formed — PQQ helps to enhance energy production.