Co-E1 (NADH) is the principal carrier of electrons in the oxidation of molecules in mitochondria that produce energy in a cell. It also powers the electron transport process in membranes of mitochondria that allow the transport of energy within cells and between our cells as well. Co-Enzyme 1 stimulates the cellular production of neurotransmitters and is directly involved in the body’s cellular immune system because Co-E1 is used for DNA repair in cells.