Pyrroloquinoline quinone, commonly referred to as PQQ, is a compound that has garnered attention in the realm of health and wellness, particularly in the context of dietary supplements. Found in a variety of foods, including fermented soybeans, spinach, and green tea, PQQ is believed to boost mitochondrial function, reduce oxidative stress, and enhance cognitive performance. As the popularity of PQQ supplements rises, it is crucial to explore their benefits, sources, and availability, including where to purchase them, such as chemists and health stores.