NADH, chemically known as nicotinamide adenine dinucleotide, is a vital coenzyme present in every living animal and plant cell. It plays a crucial role in thousands of metabolic reactions within the human body, including the Krebs cycle and the electron transport chain. NADH's importance in gene repair, immunity enhancement, anti-oxidation, and sleep improvement makes it a highly valuable substance for bodily functions.

However, NADH is inherently unstable and sensitive to environmental factors such as light, acidic conditions, oxygen, and moisture. These elements can alter its molecular structure, rendering it less effective. Additionally, NADH's intolerance to acid means that when ingested, it is often inactivated by stomach acid, making it difficult to achieve its full potential in external applications.