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NAD+

Endogenous dinucleotide coenzyme, not a peptide

Cellular metabolismageing and IV wellness…
Generic peptide vial illustrationNAD+
Entity typeMetabolite / cofactor
Evidence reviewed2026-09-18
Canonical recordNADPLUS
Page updated2026-09-20
Evidence profileDirect IV human exposure exists; anti-ageing/wellness efficacy remains unproven
Human evidenceHuman exposure
Regulatory statusNo broad wellness/ageing approval
Choose your depthStart simple, then open the evidence or technical detail only if you need it.
Quick answerPlain languageEvidenceOutcomes and studiesStudiesPrimary recordsTechnicalMechanism, route and identifiers

In plain English

30-second evidence answer

What does the evidence mean in simple terms?

NAD-related treatments have human research, but direct evidence for IV NAD+ as an anti-ageing or wellness treatment is limited. Studies of NAD biology or other NAD-raising compounds should not be treated as proof that IV NAD+ improves energy, cognition or lifespan.

Still uncertain: Durable anti-ageing, energy, cognition, disease-prevention or lifespan benefit from IV NAD+.

New to terms such as “preclinical”, “randomized” or “investigational”? Use the plain-English glossary →

What does the evidence mean in simple terms? table
What is it?Endogenous dinucleotide coenzyme, not a peptide
Entity typeMetabolite / cofactor
Research focusCellular metabolism, ageing and IV wellness research
Human evidenceDirect IV NAD+ human evidence remains sparse. Small infusion studies characterize metabolism/tolerability, while a 2026 systematic review found no eligible IV/IM NAD+ outcome trial demonstrating anti-ageing or wellness efficacy.
Regulatory statusNo broad FDA/EMA anti-ageing or wellness indication for IV NAD+ identified.
Main limitationsDurable anti-ageing, energy, cognition, disease-prevention or lifespan benefit from IV NAD+.
SafetyIV administration can produce infusion-related symptoms; long-term clinical benefit/risk is inadequately characterized.
Evidence reviewed2026-09-18
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Direct IV NAD+ human evidence remains sparse. Small infusion studies characterize metabolism/tolerability, while a 2026 systematic review found no eligible IV/IM NAD+ outcome trial demonstrating anti-ageing or wellness efficacy.
Outcome-level evidence

Evidence is not one score.

Each record below answers a narrower question about an outcome, population or context. Evidence status and the study finding are shown separately so strong evidence is not mistaken for a positive effect.

How to read this →

Intravenous NAD+ metabolism / tolerability

Human evidence
Very small human pilot

Context: Adults receiving experimental IV NAD+

Finding: Direct human IV exposure has been studied, but primarily as metabolism/PK, not efficacy.

Uncertainty / evidence gap: No evidence from this study that IV NAD+ improves energy, cognition or ageing outcomes.

Verified 2026-09-18Primary source ↗

Energy / anti-ageing / cognitive wellness benefit from IV NAD+

Evidence gap
Insufficient direct clinical efficacy evidence

Context: Wellness users

Finding: Biological plausibility is much stronger than direct IV therapeutic proof.

Uncertainty / evidence gap: No validated durable anti-ageing or cognitive outcome established for IV NAD+.

IV infusion tolerability

Human evidence
Very limited non-randomized human evidence

Context: Adults receiving commercial IV NAD+

Finding: Direct IV exposure can be symptom-limited even when selected short-term lab markers remain unchanged.

Uncertainty / evidence gap: No evidence from this study of durable anti-ageing, cognitive or energy benefit.

Verified 2026-09-18Primary source ↗

Anti-ageing / wellness efficacy of parenteral NAD+

Evidence gap
Systematic review finds direct outcome-evidence gap

Context: Wellness / longevity use

Finding: Direct IV NAD+ clinical effectiveness remains unproven for wellness outcomes.

Uncertainty / evidence gap: Absence of eligible direct outcome trials is the key finding.

Verified 2026-09-18Primary source ↗
Evidence rule: an outcome-specific evidence label is not a recommendation, a safety rating or an overall score for the compound.

Evidence synthesis

  • ✓Direct human IV exposure has been studied, but primarily as metabolism/PK, not efficacy.
  • ✓Biological plausibility is much stronger than direct IV therapeutic proof.
  • ✓Direct IV exposure can be symptom-limited even when selected short-term lab markers remain unchanged.
  • ✓Direct IV NAD+ clinical effectiveness remains unproven for wellness outcomes.

Important limitations

  • !Very small cohort; limited control group; no clinical efficacy endpoint.
  • !IV NAD+ should not be conflated with NR/NMN or with cellular NAD biology.
  • !Small retrospective commercial cohort; comparator was IV NR, not placebo.
  • !Different NAD-related compounds and routes cannot be pooled as equivalent.

Selected study & evidence records

Six-hour intravenous NAD+ metabolome pilot

2019 · Pilot controlled human infusion study · n=11

The study characterized metabolism/excretion during infusion; it was not designed to establish anti-ageing, energy or cognitive efficacy.

Study detail → Primary source ↗

Intravenous infusion of NAD+ versus nicotinamide riboside: retrospective tolerability pilot

2026 · Retrospective real-world comparative pilot · n=Not stated here

IV NAD+ produced more infusion symptoms and substantially longer infusion times; exploratory metabolic changes were variable.

Study detail → Primary source ↗

NAD+ supplementation for anti-aging and wellness: PRISMA-guided systematic review

2026 · Systematic review · n=113 studies (33 human; 80 rodent)

Oral NR/NMN usually showed biochemical target engagement, but clinically meaningful outcomes were heterogeneous; no eligible IV/IM NAD+ outcome trial for anti-ageing/wellness was identified.

Study detail → Primary source ↗

Safety and unknowns

IV administration can produce infusion-related symptoms; long-term clinical benefit/risk is inadequately characterized.

Limited IV data report infusion-related symptoms including GI effects, increased heart rate and chest pressure; long-term benefit-risk is not adequately characterized.

Technical details

Mechanism / biologyCentral redox coenzyme in energy metabolism and substrate for enzymes including sirtuins/PARPs.
Route / formulation boundaryDo not conflate evidence for NAD precursors (NR/NMN) with IV NAD+ itself.
Identity / data-quality noteUse the canonical compound identity and studied formulation when interpreting evidence.
Study / label regimen evidenceVerified study/label regimen evidence is available. Published human IV pilot regimen. Open descriptive regimen evidence →
Identifiers & alternate namesNAD · Nicotinamide adenine dinucleotide

Source depth & provenance

WhichPeps does not rely on a single headline study when the evidence base is broader. Primary research, registries, regulators and supporting records are kept distinct.

3structured study records
4outcome records
6linked source records

How to read these counts: they show evidence coverage, not evidence strength. One large, well-designed study can be more informative than several weak or indirect records.

Show supporting and discovery sources

Study pages above contain the records used for public evidence summaries. The links below include supporting, regulatory and literature-discovery sources; a registry or search result is not treated as proof of benefit.

Evidence rule: WhichPeps keeps human, animal, laboratory, regulatory and product/formulation evidence distinct. Common names help people find the page; they do not change the underlying scientific identity.