Pyrroloquinoline quinone (PQQ) is a redox cofactor and potent antioxidant widely used as a dietary supplement for promoting cellular energy production, supporting mitochondrial biogenesis, and enhancing cognitive function, memory, and learning. It helps reduce oxidative stress and may lower the risk of age-related neurodegenerative diseases like Alzheimer's. PQQ supports cardiovascular health by reducing inflammation and improving heart cell function, boosts immune system activity to fight pathogens and toxins, and may improve sleep quality while reducing chronic fatigue.

Naturally found in foods such as soybeans, green leafy vegetables, and green tea, PQQ is also produced as a supplement to meet bodily needs. In skincare, it protects against free radical damage and environmental stressors. Ongoing research explores its role in nerve tissue regeneration and agricultural applications, where it enhances plant growth and crop stress resistance. Its multifaceted benefits make PQQ valuable in human health, cosmetics, and agriculture.