Let’s visit this online store Pure NMN where you can purchase Aeternum’s Pure NMN Powder tablets and capsules. There is no need to refrigerate this NMN! It has undergone continuous and thorough testing while being kept at room temperature for two years, and the results have indicated that its purity has remained over 99% throughout that time. Additionally, their product is not supplied refrigerated and is 100% pure when it is returned from testing by a third party after you get it. This NMN is packaged in a heat-sealed, dual-foil layer bag with a bubble wrap bag that is also heat-reflective. The final outer shell will then be either stiffened card or a plastic bag with bubble wrap.