Provita Nadogen - A complex and unique formulation intended to help increase the body's Nicotinamide Adenine Nucleotide (NAD+) levels. Mitochondrial dysfunction is a hallmark of metabolic decline during aging. NAD+ is required not only for life but for a long life. It declines during aging. This formulation has been designed to make use of all available pathways known to increase the NAD+ levels in the body by incorporating the following key ingredients: Nicotinamide Riboside, Pterostilbene, and Tryptophan.