What is it?
NAD+ stands for nicotinamide adenine dinucleotide. It participates in cellular reactions, including processes involved in energy metabolism. The NIH niacin fact sheet explains how niacin forms contribute to NAD in the body.
NAD+, nicotinamide, nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN) are not interchangeable product descriptions. A study of a precursor is not automatically a study of an NAD+ injection.
What does the evidence show?
Biochemistry explains what NAD does inside cells. It does not by itself show that taking a product improves fatigue, performance or ageing outcomes. A biomarker change is not equivalent to a meaningful health benefit.
When reading a study, identify the substance, route, comparison group and measured outcome. Evidence for dietary niacin or an oral precursor should not be used as proof for an intravenous NAD+ preparation.
Safety and regulatory context
Regulatory status and risks depend on the exact product and route. Information about niacin nutrition cannot establish approval or safety of an injectable NAD+ preparation.
FDA explains that compounded medicines are not FDA-approved and are not reviewed before marketing for safety, effectiveness or manufacturing quality. This is US context; check UK requirements separately. There are no infusion or self-injection instructions here.
How to read a research product label
Identify the exact molecule, form and batch before comparing products. A certificate should name the tested material, method, batch and laboratory. Chemical purity is not the same as sterility, absence of endotoxins or proof of benefit in people. A “research use only” label does not authorise medical use.
Common questions
Is NAD+ a peptide?
No. NAD+ is a coenzyme, not a chain of amino acids. It belongs in a separate category from research peptides.
Are NAD+ and NMN the same thing?
No. NMN is a related precursor, not the same molecule as NAD+. Results for one product or route cannot automatically be transferred to another.
Is an anti-ageing effect of NAD+ infusions established here?
No. Normal cellular functions and biomarker changes are not proof of a clinical anti-ageing benefit. This page does not promote or sell NAD+ infusions.
Sources
FDA sources describe the United States; they do not establish authorisation in the UK, Germany or Poland. Check local medicines authorities for a specific product.