NAD+ Supplement with Resveratrol & Quercetin – Cellular Energy

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This NAD+ supplement puts 500mg of Nicotinamide Adenine Dinucleotide into each two-capsule serving, alongside 250mg of Quercetin Dihydrate and 150mg of Resveratrol 98% from Japanes e Knotweed root. Most NAD+ supplements stop at supplying the coenzyme. This formula doesn't. It addresses all three variables that determine how much NAD+ stays available inside your cells: how much you supply, how fast an enzyme called CD38 degrades it, and whether the sirtuin proteins that use it can actually function. Thirty days per container. No proprietary blends hiding the real doses. The serving size and per-serving amounts are right on the label. What This NAD+ Supplement Contains (and Why) Three ingredients, each targeting a different part of the NAD+ pathway. NAD+ at 500mg is the coenzyme itself. Nicotinamide Adenine Dinucleotide participates in over 500 enzymatic reactions. The two that matter for aging are ATP production inside mitochondria and acting as the essential cofactor for sirtuins, a group of proteins linked to DNA repair, stress resistance, and lifespan regulation in animal models. NAD+ levels fall by roughly 50% between ages 40 and 60 according to Cleveland Clinic's research overview. That's a large enough decline to measurably affect mitochondrial output and cellular maintenance. Quercetin Dihydrate at 250mg is sourced from Sophora japonica whole flower buds. The Dihydrate form has better water solubility than anhydrous quercetin, which matters for absorption in the gastrointestinal tract. Its primary role in this formula is inhibiting CD38, the enzyme responsible for degrading NAD+. More on that below. Resveratrol at 150mg comes from Polygonum cuspidatum (Japanese Knotweed) root at 98% purity. One glass of red wine contains roughly 0.3mg to 1mg of resveratrol. This serving contains 150 times the upper end of that range. Dietary sources aren't a realistic substitute when the research uses pharmacological doses. Vegetable HPMC capsules, brown rice flour, olive oil, microcrystalline cellulose, silicon dioxide, and magnesium stearate round out the formula. No artificial colors, no nicotinic acid. Why the Dose of This NAD+ Supplement Matters 500mg isn't an arbitrary number. The NIAGEN 8-week randomized controlled trial enrolled 140 healthy adults and tested NR, an NAD+ precursor, at three dose levels: 100mg, 300mg, and 1,000mg per day. At 100mg, whole-blood NAD+ rose by 22% at two weeks but dropped back to 10% by week 8. The effect didn't hold. At 300mg, NAD+ increased 51% at two weeks and remained at 48% through week 8. The dose-response relationship was clear across all groups. Most NAD+ supplements on the market use doses well below what those trials studied. Products with 100mg, 50mg, even 25mg of NAD+ or its precursors are common. Those amounts don't match what the published research used to achieve sustained whole-blood NAD+ elevation. At 500mg per serving, this formula falls within the range where clinical trials have consistently found significant, lasting increases. The clinical data is the reason for the dose, not marketing. The CD38 Problem Most NAD+ Supplements Ignore There's an enzyme called CD38. Its job is to degrade NAD+. Its activity increases substantially with age. In adipose tissue, CD38 expression is 2.5 times higher in older adults compared to younger ones. In activated macrophages, CD38 mRNA expression increases by 600-fold compared to resting immune cells. These aren't rounding-error differences. As you get older, your body isn't just producing less NAD+. The primary enzyme that breaks it down is running harder at the same time. Two problems compounding in the same direction. Mouse knockout research makes the scale of this visible. When CD38 function was removed from aged mice, those animals were almost entirely protected from the 50% NAD+ decline seen in metabolic tissues during normal aging. The mitochondrial sirtuin SIRT3 was 3.5 times more active in CD38 knockout animals than in normally aging controls. A NAD+ supplement that doesn't include a CD38 inhibitor is solving half the problem. You're refilling the tank while the drain runs faster than it used to. Most NAD+ supplements on the market don't address this, which is one reason their real-world results often fall short of what the precursor research would predict. Quercetin Dihydrate: The NAD+ Supplement's Answer to CD38 Quercetin is the most extensively studied natural CD38 inhibitor. A 2013 study published in Diabetes (Escande et al., PMC3609577) measured quercetin's CD38 inhibition at an IC50 of 13.8 micromol/L in cell-free assays and 16.4 micromol/L in cellular systems. That's the concentration at which quercetin blocks half of CD38's NAD+-degrading activity. The same study confirmed dose-dependent increases in intracellular NAD+ following quercetin treatment, connecting CD38 inhibition directly to downstream NAD+ availability. The mechanism isn't theoretical. This NAD+ supplement uses Quercetin Dihydrate at 250mg, specifically from Sophora japonica whole flower buds. Dihydrate is the form used in clinical supplement research for a reason: it's more water-soluble than the anhydrous version common in lower-cost products, and solubility affects how much actually gets absorbed. Quercetin is also being studied for senolytic activity (clearing senescent cells) and anti-inflammatory effects on cytokines including TNF-alpha, IL-1beta, and IL-6. Those mechanisms extend beyond the NAD+ pathway, but they're secondary to the CD38 inhibition purpose here. Resveratrol 98%: The Third Layer of This NAD+ Supplement Stack Sirtuins can't function without NAD+. But even when NAD+ is available, sirtuin activity depends on the efficiency of the deacetylation reaction. Resveratrol's research profile centers on SIRT1 activation. SIRT1 is the most studied of the seven sirtuin proteins, and the proposed mechanism is that resveratrol stabilizes the binding complex between SIRT1 and its substrates, increasing the rate of catalytic activity. The rationale for including it in a NAD+ supplement: if NAD+ is the substrate, resveratrol may improve how efficiently that substrate gets used. The human clinical evidence is more complicated than the mechanistic picture suggests. A 2025 GRADE-assessed meta-analysis covering 11 resveratrol randomized controlled trials found no statistically significant overall effect on SIRT1 gene expression (SMD = 0.05, p = 0.73), though some subgroup analysis showed positive effects in blood tissue at shorter treatment durations. This is an honest characterization of where the science stands. The research is ongoing. What's established is that SIRT1 activity depends directly on NAD+ availability. Resveratrol at 98% purity from Polygonum cuspidatum root provides a pharmacologically relevant dose. Red wine doesn't. How to Take This NAD+ Supplement Two capsules daily, in the morning, with water. If you notice GI sensitivity in the first week or two, take it with breakfast. Morning timing isn't arbitrary. NAD+ metabolism follows circadian patterns, with mitochondrial energy production peaking during daylight hours. Taking your NAD+ supplement when the body is in active metabolic mode puts the dose where it's most useful, rather than supplementing a system that's already winding down for the night. Give it 30 days before drawing conclusions, and ideally 8 weeks. Human trials measuring whole-blood NAD+ elevation show significant increases within 14 days, but the 8-week NIAGEN data showed levels holding stable from week 2 through week 8. The effect doesn't fade with continued use at effective doses. Consistency matters more than timing precision. Safety Profile of This NAD+ Supplement A 2024 systematic review covering 10 NMN randomized trials with 437 total participants found that only 8.2% of participants reported any adverse event, all deemed unrelated to the intervention. The NIAGEN 8-week trial of 140 people showed adverse event rates nearly identical between NR and placebo groups at all three doses tested, with zero cases of flushing at any dose. Flushing is a nicotinic acid (niacin) side effect. It doesn't occur with NAD+, NMN, or NR. The confusion comes from the fact that all of these are related to the vitamin B3 family, but nicotinic acid is the specific form that causes flushing through prostaglandin release. This NAD+ supplement contains no nicotinic acid. Three groups should talk to a physician before starting. Cancer patients on active chemotherapy: a 2026 study from Case Western Reserve University found oral NAD+ supplementation was associated with worse outcomes in a specific chemotherapy protocol. People on warfarin or other blood-thinning medications: quercetin has mild anticoagulant properties. Pregnant or nursing women: insufficient safety data for this population. For everyone else, the existing evidence base points consistently toward favorable tolerability at doses comparable to or higher than what's in this formula. Who This NAD+ Supplement Is For Adults over 35 who want to address NAD+ decline before it accelerates. The steepest documented drops happen in the 40-to-60 age range, where whole-blood NAD+ can fall by roughly 50% compared to younger adults. That's the window where a NAD+ supplement has the most ground to make up, and where the CD38 inhibition piece becomes particularly relevant because CD38 activity is rising at the same time NAD+ is falling. People with high exercise loads tend to have higher NAD+ turnover because physical stress increases PARP enzyme activity, which competes with sirtuins for NAD+. Distance runners, cyclists, and people who train frequently often notice this more acutely than sedentary individuals at the same age. The formula's clean ingredient profile doesn't conflict with most training supplements. It's not the right choice for cancer patients on chemotherapy, pregnant or nursing women, or anyone on prescription anticoagulants without physician input. For everyone else: three ingredients, research-cited doses, fully disclosed amounts, vegetable capsules. Any NAD+ supplement worth buying shows you exactly what's in it. This one does. Frequently Asked Questions About This NAD+ Supplement Is this different from NMN or NR products? NMN and NR are NAD+ precursors. Your body converts them into NAD+ through enzymatic steps. This formula uses NAD+ directly, which bypasses those conversion steps, and adds quercetin to inhibit CD38 degradation, which most NMN and NR products don't address. A 2026 crossover pharmacokinetic trial (Berven et al., iScience) found NR raised blood NAD+ by 161% versus NMN's 69% at the same 1,200mg/day dose, so even within the precursor category the forms aren't equivalent. The CD38 inhibition layer is what separates a triple-stack formula from a single-ingredient product. How long until I notice a difference? Blood NAD+ levels increase measurably within 14 days in clinical trial data. Subjective improvements in energy and cognitive function are reported by study participants within 2 to 4 weeks in most trials. Eight weeks of consistent daily use is the standard evaluation window based on published protocol lengths. Does this cause flushing? No. Zero cases of flushing were reported in the 140-person NIAGEN trial at any dose tested. Flushing is a nicotinic acid effect. NAD+, NMN, and NR don't cause it. Can I take this with other supplements? Most combinations are straightforward. Quercetin has mild anticoagulant properties, so if you're on warfarin or other blood thinners, discuss this with your physician before starting. Why direct NAD+ instead of only NMN or NR? Oral direct NAD+ is partially hydrolyzed in the small intestine before entering systemic circulation, so some of what you take is converted to precursors during digestion (PMC10240123). That's why the formula pairs it with quercetin to inhibit CD38 degradation at the cellular level rather than relying solely on flooding the precursor pathway. Both approaches address NAD+ availability, and they work through different mechanisms. Show more