They are classified under S2: Peptide Hormones, Growth Factors, Related Substances and Mimetics
Over time, NAD+ levels naturally decline, leading to fatigue, slower metabolism, brain fog, and decreased resilience
However, its essential to weigh the potential risks and side effects and consider alternative supplementation methods, such as oral supplements or patches, when appropriate
*Correspondence: Weina Li, [email protected] Meng Li, [email protected] These authors have contributed equally to this work This article was submitted to Drug Metabolism and Transport, a section of the journal Frontiers in Pharmacology Disclaimer All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers
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