PQQ:Pyrroloquinoline quinone:NMN:Nicotinamide Mononucleotide:Phosphatidylserine:Anti-aging supplements PQQ PQQ supplements are often used for energy, memory, enhanced focus, and overall brain health. However, researchers don’t know very much about how these supplements affect your health. What Is PQQ? PQQ is pyrroloquinoline quinone. It is sometimes called methoxatin,