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As NAD+ levels naturally decline with age, stress, and lack of sleep, people may notice brain fog, fatigue, or difficulty concentrating

However, since GH release is pulsatile and its blood levels fluctuate markedly, a single measurement of a random GH level is minimally useful in clinical settings

10.1158/0008-5472.can-18-0773 [DOI] [PubMed] [Google Scholar] 79.Rustom A, Saffrich R, Markovic I, Walther P, Gerdes HH

NAD+ Injection should never be used past its expiration date or beyond-use date, as potency and sterility cannot be guaranteed
