The scientific giant Einstein once predicted that "the future development of science is nothing more than continuing to advance towards the macro and micro worlds.". Currently, nanotechnology, which is at the forefront of the micro world, has quietly brought various changes to human life. Further control of material molecules and atoms through nanotechnology will trigger a more profound technological revolution than micrometer technology. Nanotechnology has been widely applied in modern medicine and the field of life and health, and its role in improving the bioavailability of drug formulations and improving drug adherence is particularly prominent. For example, in recent years, nanotechnology has been applied to anti-aging substance NMN discovered based on aging molecular regulatory mechanisms, bringing significant effects.

NAD+, also known as coenzyme I, also known as nicotinamide adenine dinucleotide or niacin diphosphate, exists in every cell and participates in thousands of reactions. NAD+is an important coenzyme in the tricarboxylic acid cycle, promoting the metabolism of sugars, fats, and amino acids, and participating in energy synthesis; NAD+is the only substrate for coenzyme I consuming enzymes (the only substrate for DNA repair enzyme PARP, the only substrate for long-lived protein Sirtuins, and the only substrate for cyclic ADP ribose synthase CD38/157).