NAD+ is a cellular molecule used in energy production, signaling and DNA repair. Injections are claimed to improve energy, mental clarity, recovery and aging.
What NAD+ does and why that matters
NAD+ is not a peptide. It is a molecule cells use to turn nutrients into usable energy and to support signaling and DNA repair. NAD+ injections are claimed to improve energy, mental clarity, recovery and aging. A 2026 review found no eligible trials showing that intravenous, intramuscular or subcutaneous NAD+ itself produces those everyday benefits. [1]
Function evidence: Known role inside cells; injection benefits unproven
What people hope to feel
NAD+ injections are claimed to increase energy, improve mental clarity and recovery, reduce cravings and create a sense of rejuvenation. The fact that every cell uses NAD+ does not show that injecting it produces those effects. A 2026 systematic review found no eligible outcome trials of intravenous, intramuscular or subcutaneous NAD+ itself for anti-aging or wellness. Studies of oral precursors answer different questions and are not evidence for an NAD+ injection. [1,2]
What supports this description: Established cellular role; no eligible injected-NAD+ outcome trials
NAD+ Dosing status
Dose: No consumer dose is established or recommended here. | Frequency: No routine treatment schedule established. | Cycle: No validated consumer cycle. | Route: No routine patient route established.
Preparation: No patient reconstitution recipe. Trial preparation is not a recommendation..
NAD+ is a coenzyme, not a peptide. A 2026 systematic review found no eligible trials that tested intravenous, intramuscular or subcutaneous NAD+ itself for anti-aging or wellness outcomes. Studies of oral NR and NMN often changed biomarkers, but their clinical results varied and were often null. [1]
NAD+ Effects
NAD-related biomarkers. Oral nicotinamide riboside or mononucleotide can alter some NAD-related biomarkers, but biomarker movement is not proof of improved energy, cognition, longevity, or addiction outcomes. [1]
NAD+ Side Effects
Injection evidence gap. No eligible IV, IM, or subcutaneous NAD+ outcomes trial was identified for anti-aging or wellness in the review. Clinic infusion protocols and exact adverse-event rates therefore should not be presented as established treatment evidence. [1,2]
Frequently Asked Questions About NAD+
Is NAD+ a peptide?
No. NAD+ is a coenzyme involved in cellular redox reactions. It is included because peptide clinics commonly offer it alongside peptides. [1]
Do NAD+ injections or infusions improve energy or longevity?
That has not been established. The 2026 review found no eligible clinical outcome trials of IV, IM, or subcutaneous NAD+ itself for anti-aging or wellness. [1]
Evidence
Biochemical rationale; clinical wellness claims unestablished. NAD+ is a coenzyme, not a peptide. A 2026 systematic review found no eligible trials that tested intravenous, intramuscular or subcutaneous NAD+ itself for anti-aging or wellness outcomes. Studies of oral NR and NMN often changed biomarkers, but their clinical results varied and were often null. [1]
Witkowski M, et al. NAD+ precursor supplementation in human ageing: a systematic review of clinical evidence and future directions Ageing Research Reviews, 2026. PMID 41655607
U.S. Food and Drug Administration 503A Categories Update for September 2026 , 2026. Source
Storage
Educational evidence summary. Approval applies only to the named product and indication; compounded, investigational, and research-market products are different categories.
◇An FDA-approved label or a patient-specific prescription from a licensed pharmacy
◇The active ingredient, strength, dosage form, concentration, lot, and dispensing instructions
◇Identity or purity tests only support the tests performed; they do not prove sterility, endotoxin safety, dose accuracy, stability, or clinical suitability
◇A “research use only” vial is not a patient medicine
