What is the shelf life of the products? Chris B October 04, 2021 15:39 Updated The only exception being the NAD+ Micromist nasal spray is good for 8 months All other products offer a two year shelf life from the manufacture date.. Related articles How often should I take these supplements? Will my NMN degrade with heat exposure? Where does Alive By Science display the certificate of analysis (COA)? Do I need to take TMG if taking NAD+ boosters? Which shipping partners does Alive By Science use? Comments 0 comments Article is closed for comments.