NAD+

What Is NAD+?

NAD+ (Nicotinamide Adenine Dinucleotide) is a fundamental coenzyme present in every living cell, composed of two nucleotides joined through their phosphate groups. As a research compound, it has attracted substantial scientific interest for its central role in redox reactions, cellular energy production, and the regulation of longevity-associated enzymes such as sirtuins and PARPs.

Its underlying biological role relates to electron transfer during cellular respiration and the activation of enzymes that maintain genomic stability and metabolic homeostasis. Studies indicate that NAD+ levels decline progressively with age, and its restoration is associated with improved mitochondrial efficiency, enhanced DNA repair, and modulation of inflammatory pathways (Verdin, 2015).

Mechanism of Action

NAD+ is studied for its dual function as both a redox cofactor and a signaling substrate. Through interconversion with NADH, it shuttles electrons between metabolic pathways and supports ATP synthesis via oxidative phosphorylation (Cantó et al., 2015). It also serves as a co-substrate for sirtuins (SIRT1–SIRT7), poly(ADP-ribose) polymerases (PARPs), and CD38, regulating gene expression, DNA damage response, and intracellular calcium signaling.

Key Areas of Research

Mitochondrial Function & Energy Metabolism

Preclinical models show that NAD+ supplementation enhances mitochondrial biogenesis, increases ATP production, and improves metabolic flexibility in tissues with high energy demand (Mills et al., 2016).

DNA Repair & Genomic Stability

NAD+ is consumed by PARP enzymes during the DNA damage response. Research suggests that maintaining adequate NAD+ levels supports efficient DNA repair mechanisms and reduces the accumulation of genomic lesions (Fang et al., 2016).

Aging & Longevity Research

Studies report that age-related NAD+ decline correlates with cellular dysfunction, and that its restoration extends healthspan markers in animal models through sirtuin activation and improved stem cell function (Zhang et al., 2016).

Neuroprotection

Research highlights protective effects on neurons against oxidative stress and mitochondrial dysfunction in models of Alzheimer's, Parkinson's, and cerebral ischemia (Lautrup et al., 2019).

Metabolic Health

Studies indicate roles for NAD+ in glucose homeostasis, lipid metabolism, and protection against diet- and age-induced metabolic dysfunction (Yoshino et al., 2011).

Research Use Only

NAD+ supplied by Peptidos.eu is intended exclusively for laboratory and scientific research. It is not approved for human or animal consumption and must not be used as a medicine or diagnostic tool.

Disclaimer

The products offered by peptidos.eu are intended exclusively for research and laboratory use and are sold only to qualified professionals, institutions, or authorized entities. These products are not intended for human or veterinary consumption, nor for any application involving living organisms, including — but not limited to — diagnostic, therapeutic, or recreational purposes.

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• They are a qualified professional or entity, possessing the necessary competence, training, and facilities for the safe handling of chemical reagents;

• They will use the product in full compliance with all applicable local, national, and European Union laws and regulations;

• They will adopt appropriate safety measures during all stages of handling, storage, and disposal.

Prohibited Uses

• The product must not be used as an Active Pharmaceutical Ingredient (API) in the manufacturing or preparation of medicines intended for humans or animals;

• Any direct administration or use on humans or animals is strictly prohibited;

• Peptidos.eu does not endorse or permit the use of its products for the production, testing, or development of illegal substances.

Liability

• The purchaser assumes full responsibility for the handling, storage, and use of the product in safe conditions and in compliance with the law.

• Peptidos.eu shall not be held liable for any direct or indirect damages arising from improper use, incorrect storage, or unauthorized use of the product.

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• In case of doubts regarding the safe and lawful use of the product, it is recommended to consult a qualified professional experienced in laboratory research.

Regulatory Compliance

Peptidos.eu does not claim or imply that its products are approved by the European Medicines Agency (EMA), the Food and Drug Administration (FDA), or any other regulatory authority. All information provided is for informational and scientific purposes only. These products are not intended to diagnose, treat, cure, or prevent any disease.