NAD+
NAD+
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NAD+ Complex with Quercetin & Resveratrol
A dietary supplement providing 500 mg of NAD+ (nicotinamide adenine dinucleotide) combined with quercetin and resveratrol. This formula is designed to support cellular energy metabolism, mitochondrial function, and overall cellular health through three complementary compounds studied for their roles in aging, metabolism, and cellular resilience.
What's In It:
• NAD+ (Nicotinamide Adenine Dinucleotide) - 500 mg: A critical coenzyme present in every cell that functions as an electron carrier in cellular respiration. NAD+ exists in two forms: NAD+ (oxidized) and NADH (reduced), and this interconversion is fundamental to energy metabolism.
NAD+'s Cellular Roles:
- Essential cofactor for glycolysis, the citric acid cycle, and the electron transport chain—the processes that convert nutrients into ATP (cellular energy)
- Substrate for sirtuins (SIRT1-7)—proteins that regulate DNA repair, gene expression, inflammation, and metabolic homeostasis
- Required by PARPs (poly ADP-ribose polymerases)—enzymes involved in DNA repair and genome stability
- Substrate for CD38 and other NAD+-consuming enzymes involved in cellular signaling
The NAD+ Decline Issue: Research demonstrates that NAD+ levels decline with age—by approximately 50% between ages 40-60 in various tissues. This decline is attributed to:
- Increased consumption by CD38 (which increases with age)
- Decreased synthesis from precursors
- Increased NAD+ degradation
- Reduced mitochondrial function
Declining NAD+ levels correlate with reduced sirtuin activity, impaired mitochondrial function, decreased cellular repair capacity, and various age-related metabolic changes.
Oral NAD+ Supplementation: A critical consideration: NAD+ is a large, charged molecule (molecular weight 663 g/mol) that has poor bioavailability when taken orally. It's generally broken down in the digestive tract into component parts (nicotinamide, ribose, adenine). Most longevity researchers focus on NAD+ precursors like NMN (nicotinamide mononucleotide) or NR (nicotinamide riboside) rather than direct NAD+ supplementation, as precursors have demonstrated better absorption and ability to raise cellular NAD+ levels.
However, some research suggests that enteric coating or specific formulation methods may protect NAD+ through digestion, though evidence is still emerging. This product provides direct NAD+ rather than precursors.
• Quercetin Dihydrate Extract (250 mg): A flavonoid polyphenol found in onions, apples, berries, and other plants. Quercetin has been studied for:
- Antioxidant properties (directly scavenges free radicals)
- Senolytic potential (may help clear senescent "zombie" cells that accumulate with age)
- Support for healthy inflammatory response pathways
- Potential to inhibit CD38 (the enzyme that degrades NAD+), theoretically helping preserve NAD+ levels
- Zinc ionophore properties (facilitates cellular zinc uptake)
Quercetin has relatively low bioavailability (approximately 2-17% absorption) but its metabolites may contribute to biological effects.
• Japanese Knotweed Extract (150 mg, standardized to 98% Resveratrol): Provides approximately 147 mg of trans-resveratrol, a polyphenolic stilbene compound also found in grape skins and red wine.
Resveratrol's Studied Effects:
- Sirtuin activator—particularly SIRT1, which regulates mitochondrial biogenesis, fat metabolism, and cellular stress resistance
- Activates AMPK (AMP-activated protein kinase), a key metabolic sensor that promotes fat oxidation and glucose uptake
- Antioxidant and anti-inflammatory properties
- Studied for cardiovascular support through effects on endothelial function and lipid metabolism
- Neuroprotective properties examined in animal models
Bioavailability Challenge: Resveratrol has poor oral bioavailability (approximately 1% reaches systemic circulation unchanged) due to rapid metabolism in the intestines and liver. However, metabolites may retain biological activity, and some research suggests benefits despite low bioavailability.
What It Does:
This supplement aims to support cellular energy production and metabolic health through three mechanisms:
- Direct NAD+ provision (though absorption challenges apply)
- Potential NAD+ preservation via quercetin's CD38 inhibition
- Sirtuin activation through resveratrol, which may complement NAD+'s role as a sirtuin substrate
The combination theoretically addresses cellular energy metabolism, mitochondrial function, DNA repair processes, and cellular stress resistance—all relevant to healthy aging and metabolic function.
Realistic Expectations:
Effects are subtle and cumulative rather than immediately perceptible. Those interested in NAD+ support for longevity or metabolic optimization may notice improvements in energy levels, recovery, or mental clarity over 4-8 weeks of consistent use, though responses vary significantly between individuals.
Important Consideration: The longevity and anti-aging research community generally favors NAD+ precursors (NMN, NR) over direct NAD+ due to bioavailability concerns. If desired effects are not achieved with this formula, NAD+ precursor supplements may be worth exploring.
Who Might Use This:
Adults interested in longevity optimization, cellular health support, metabolic function, individuals experiencing age-related energy decline, biohackers, or those seeking to support healthy aging processes through nutritional supplementation.
Sourcing & Production:
Manufactured in the USA.
Product Specifications:
- Servings per Container: 30 (60 capsules)
- Serving Size: 2 capsules
- Net Weight: 1.8 oz (0.11 lb / 50g)
- Total Weight: 2.4 oz (0.15 lb / 68g)
- Country of Origin: USA
Usage Instructions: Adults: Take two (2) capsules daily with 6 oz (177 ml) of water, preferably with food to enhance absorption of quercetin and resveratrol (both fat-soluble compounds benefit from dietary fat). For optimal results, take consistently at the same time each day, or as directed by your healthcare professional.
Important Safety Information:
Do not exceed recommended dose. Pregnant or nursing women, children under 18, and individuals with known medical conditions should consult a physician before use. Resveratrol may have mild anticoagulant effects—consult your healthcare provider if taking blood-thinning medications.
KEEP OUT OF REACH OF CHILDREN. DO NOT USE IF SAFETY SEAL IS DAMAGED OR MISSING. STORE IN A COOL, DRY PLACE.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

The full picture
Everything Vyvata knows about this product — the score, the evidence, the FAQ, and where else to find shopper reviews. No hidden data. Every vendor is scored on the same published rubric — no brand can pay for placement. Read the rubric →
Six-dimension breakdown
Why this scored 48/100
Oral NAD+ 500 mg has poor bioavailability — the dinucleotide is largely hydrolyzed in the gut; NR/NMN are preferred precursors (Trammell 2016). Resveratrol and quercetin adds anti-oxidant angle. Dose is disclosed but the delivery form is not evidence-aligned for a longevity claim.
sub_therapeutic_dose. See methodology for the current list of auto-fail rules.
Evidence & sources
The Vyvata score's Evidence dimension measures the quality of published RCT support for a product's active ingredients at the label dose. Our source hierarchy: double-blind RCTs in MEDLINE-indexed journals > single-blind RCTs > open-label trials > observational studies > mechanism papers > N=1 case studies (anecdotes). Predatory journals and manufacturer-authored studies without independent replication are weighted down.
Product-specific evidence citations for this item are embedded in the analysis text on the "Analysis" tab. For the full framework and evidence hierarchy, see the methodology page.
How to read the Evidence dimension
- 80–100: Multiple double-blind RCTs in indexed journals directly testing this product OR the exact ingredients at the exact dose.
- 60–79: Single double-blind RCT + supporting ingredient literature at the studied dose.
- 40–59: Open-label trials + ingredient literature; no product-specific double-blind evidence.
- 20–39: Ingredient literature only; no product-specific trials or trials in predatory venues.
- 0–19: No credible evidence base or unverifiable claims.
Frequently asked questions
Auto-generated from Vyvata's scoring data for this product. For general questions about the store (shipping, returns, wholesale), see the site FAQ.
What is NAD+?
NAD+, categorized under Longevity & cellular health in the Supplements vertical. It is scored on the Vyvata Scoring Framework — an independent 6-dimension rubric applied uniformly to every product Vyvata lists.
How does NAD+ score on the Vyvata rubric?
48/100 overall — Rejected tier (0–49 band). Per-dimension breakdown: Safety 55, Transparency 55, Formulation 50, Manufacturing 50, Sustainability 50, Evidence 40. Scored as of 2026-07-31.
Why did NAD+ score in the Rejected tier?
Oral NAD+ 500 mg has poor bioavailability — the dinucleotide is largely hydrolyzed in the gut; NR/NMN are preferred precursors (Trammell 2016). Resveratrol and quercetin adds anti-oxidant angle. Dose is disclosed but the delivery form is not evidence-aligned for a longevity claim.
What are the strongest and weakest aspects of this product?
Strongest: Safety at 55/100 (adverse-event profile, interaction risk, and dose ceiling) and Transparency at 55/100 (dose disclosure vs proprietary blends, and honesty of marketing claims). Weakest: Sustainability at 50/100 (sourcing practices, packaging, and corporate practice) and Evidence at 40/100 (quality of published RCT support for the active ingredients at the label dose). All six dimensions feed the overall Vyvata score; a weakness on any one dimension pulls the overall down proportionally.
Is NAD+ third-party tested?
No third-party certifications (NSF, USP, ConsumerLab, or equivalent) were on record at the time of scoring. This affects the Manufacturing dimension score. The manufacturer may test internally or have obtained certification more recently — check the current product label for the most up-to-date information.
Why was this product auto-rejected?
This product triggered the Vyvata auto-fail rule "sub_therapeutic_dose", which places it in the Rejected tier regardless of its scores on other dimensions. See the full explanation above and the methodology page for the current list of auto-fail rules.
Are there higher-scoring alternatives to NAD+?
The top-ranked longevity & cellular health product in the Vyvata catalog is currently Timeline Mitopure Urolithin A Supplement Softgels at 77/100. See the full ranked list of 77 scored products in this subcategory at https://vyvata.com/pages/best-longevity-and-cellular-health-supplements-ranked.
What does the Vyvata score mean?
The Vyvata Scoring Framework rates every listed product 0–100 across six dimensions: Evidence, Formulation, Manufacturing, Safety, Transparency, and Sustainability. Tier bands: Elite 85–100 (top-tier evidence + formulation + manufacturing), Verified 70–84 (strong on most dimensions), Standard 50–69 (solid but with weaknesses called out), Rejected 0–49 (specific failures documented). Rejected products remain listed with reasons. Full methodology at https://vyvata.com/pages/methodology.
Where can I read customer reviews for NAD+?
The Vyvata score measures product integrity against a published rubric, not customer sentiment. For customer reviews and community discussion, search external platforms directly: Amazon (https://www.amazon.com/s?k=NAD%2B),Google(https://www.google.com/search?q=NAD%2B+reviews),Reddit(https://www.reddit.com/search/?q=NAD%2B%20review),andTrustpilot(https://www.trustpilot.com/search?query=NAD%2B).Vyvatadoesnotaggregate,republish,orlicensethosethird-partyreviews.
Customer reviews
Reviews on other platforms
The Vyvata score measures product integrity against a published rubric, not customer sentiment. Vyvata does not aggregate, republish, or license third-party reviews — the links below open search pages on their respective platforms.
All the data we have on this product
Every VSF-related metafield surfaced verbatim. Nothing hidden. If you spot data that looks wrong, let us know.
- VSF score
- 48 / 100
- Tier
- Rejected
- Category
- Supplements
- Subcategory
- longevity cellular
- Last scored
- Auto-fail rule
sub_therapeutic_dose- Third-party certifications
- None on record at time of scoring
- Serving size
- 60 capsules
- Vendor
- Lang Wellness LLC
- Product type
- Specialty Supplements
- Tags
- Lang Wellness LLC, Shopify Collective
Every score is set from the published rubric, audit-logged, and rescored whenever new evidence emerges (published trials, updated labels, third-party testing releases). Every vendor is scored on the same criteria — no pay-to-play. See our editorial-independence disclosure for the full policy, including brands with an editorial relationship to this site.
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