In the market of various Japan NMN products in Hong Kong, the first thing we need to check is whether the product is clearly labeled as containing β-nicotinamide mononucleotide or β-NMN. The purity and quality of NMN should be the most critical considerations. Generally, NMN health products with a purity greater than 99% can be considered, We should also look out to see whether the product has relevant quality certification (such as JFRL, GMP, SGS, etc.). In addition, NMN produced with yeast fermentation such as M’s Premium NMN should be selected. The NMN produced by this production method is more stable and can better ensure the quality of NMN.  NMN is highly sensitive to high temperature and humidity, where it is easily decomposed into vitamin B3. Therefore, most brands will only do the purity test in the state of NMN powder. M’s Premium’s NMN 15000 is very stable, and challenges the humidity limit by dissolving NMN in water for 3 hours, its high stability successfully passes the harsh test conditions and maintains the quality at 100% purity, ensuring consumers can absorb a high quality NMN, where its safety can be guaranteed.