PQQ is known for its role as an antioxidant, protecting cells from oxidative stress and potentially reducing the risk of age-related diseases. In addition to its antioxidant properties, it is believed to support neuroprotection and may play a role in the growth and maintenance of neurons. Users often take Max Q10 Ultra PQQ to help enhance mental clarity, improve memory, and increase overall energy levels, particularly among individuals feeling fatigued or under stress.