Life Extension NAD+ Cell Regenerator Review 2026: Same Niagen NR as Tru Niagen, 30% Less — Plus a Resveratrol Stack Worth Considering

Life Extension: The Company Behind the NAD+ Products

Life Extension is a Fort Lauderdale, Florida-based supplement company founded in 1980 with a focus on evidence-based longevity supplementation. Unlike many supplement brands that are less than five years old, Life Extension has over four decades of manufacturing history, publishes its own peer-reviewed journal (Life Extension Magazine), and funds independent research through the Life Extension Foundation. It is one of the most established names in the longevity supplement space.

The company's approach to NAD+ supplementation is instructive: rather than developing a proprietary NAD+ precursor (as ChromaDex did with Niagen), Life Extension licenses the Niagen ingredient and packages it with its own brand credibility and distribution network. This means the active ingredient in Life Extension's NAD+ Cell Regenerator is chemically identical to what is in Tru Niagen, produced by ChromaDex, from the same manufacturing process, at the same purity specification. The difference is brand, packaging, and price.

Life Extension's product catalog spans hundreds of supplements across longevity, cardiovascular, cognitive, immune, and metabolic categories. The NAD+ Cell Regenerator line sits within their "Anti-Aging and Longevity" category alongside products like their Optimized Resveratrol, Senolytic Activator (fisetin + quercetin), and Two-Per-Day Multivitamin. This ecosystem matters because Life Extension customers often build stacks from the same brand, and the NAD+ Cell Regenerator is designed to fit into that broader protocol.

Life Extension NAD+ Product Line: Three Options Compared

Life Extension offers three distinct NAD+ products: the standalone Cell Regenerator 300 mg ($40.50), the Cell Regenerator 100 mg ($25), and the Cell Regenerator and Resveratrol Elite ($44). The Resveratrol Elite version is the most interesting because it adds trans-resveratrol, quercetin, and fisetin to the NR base, converting a single-ingredient NR supplement into a multi-pathway longevity stack at a modest price premium.

NAD+ Cell Regenerator 300 mg ($40.50/month): The core product. One capsule daily delivers 300 mg of Niagen NR: the same dose and molecule as Tru Niagen's standard product, at roughly 20% less cost. The ingredient panel is minimal: NR chloride, vegetarian capsule, silica, and vegetable stearate. No proprietary blends, no hidden ingredients, full dose disclosure. If you want NR and nothing else, this is the value play within the category.

NAD+ Cell Regenerator and Resveratrol Elite ($44/month): This is the more interesting product. It combines 300 mg NR with a polyphenol blend containing trans-resveratrol (from Japanese knotweed), quercetin phytosome, and fisetin. Each of these compounds has independent research supporting longevity-relevant mechanisms: resveratrol activates sirtuins (the same enzymes that NAD+ fuels), quercetin has emerging senolytic properties (clearing damaged cells), and fisetin showed lifespan extension in mouse models. For just $3.50 more per month than the standalone NR, you get a multi-pathway longevity stack, something that would cost $80-$120/month if you bought each component separately. See our NMN and resveratrol guide for the evidence on combining NAD+ precursors with polyphenols.

NAD+ Cell Regenerator 100 mg ($25/month): The entry-level option at the lowest NR dose with published data. Conze et al. (2019) showed 100 mg/day raised NAD+ by 22% within 2 weeks (maintained through 8 weeks), meaningful but substantially less than the 51% elevation at 300 mg. This is suitable for people who want to try NR at minimal cost before committing to the standard dose, or as a stacking dose added to an existing supplement regimen.

Why NAD+ Supplementation Exists: The Aging Problem

NAD+ levels decline approximately 50% between ages 40 and 60 ( Massudi et al., 2012; PMID 22848760). This decline impairs mitochondrial energy production, slows DNA repair, reduces sirtuin enzyme activity, and increases chronic inflammation. NAD+ precursor supplements like NR and NMN aim to counteract this decline by providing the raw materials cells need to synthesize more NAD+. Whether restoring NAD+ levels translates into measurable health improvements in humans is the central, still-unresolved question of the field.

The biological rationale is well-established. NAD+ participates in over 500 enzymatic reactions, making it one of the most metabolically important molecules in the human body. It shuttles electrons in the mitochondrial electron transport chain (energy production), is a substrate for sirtuins (a family of enzymes linked to longevity and stress resistance), fuels PARP enzymes (DNA repair), and regulates circadian rhythm through the NAMPT enzyme. When NAD+ drops, all of these processes become less efficient simultaneously: which is why NAD+ decline is sometimes called a "hallmark of aging" rather than a symptom of it.

In animal models, restoring NAD+ through NR or NMN supplementation reverses or slows multiple aging phenotypes: improved mitochondrial function, enhanced insulin sensitivity, reduced inflammation, better exercise endurance, and in some studies, extended lifespan. The mouse and rat data is extensive and largely consistent across laboratories worldwide.

The human translation is where confidence drops. Published human trials show that NR (and NMN) reliably raise circulating NAD+ levels, this is well-established. What has not been convincingly demonstrated in humans is that this NAD+ elevation produces the downstream health benefits observed in animals. The trials are too small, too short, and measure the wrong endpoints (biomarkers rather than clinical outcomes) to answer the question definitively. Larger, longer trials (several of which are underway) will eventually provide that answer.

In the meantime, Life Extension's NAD+ products represent a reasonable bet on emerging science from a manufacturing quality perspective. The NR molecule is well-characterized, the safety data is excellent, and the cost (particularly the Resveratrol Elite version) is competitive. What you are buying is a well-made supplement backed by strong mechanistic science and promising but incomplete human evidence. That is an honest description of every NAD+ product on the market in 2026. For the full biological background, see our What Is NAD+? guide and NAD+ decline after 40.

Ingredient Deep Dive: What the Resveratrol Elite Version Contains

The Resveratrol Elite formula adds three clinically studied polyphenols to the NR base: trans-resveratrol (at 250 mg, the bioactive isomer), quercetin phytosome (at 150 mg, enhanced absorption), and fisetin (at 25 mg, the senolytic compound that extended lifespan in mice). These are not filler ingredients, each has its own body of published research, and their inclusion alongside NR targets different longevity-relevant pathways simultaneously.

Trans-resveratrol is the sirtuin activator most commonly associated with David Sinclair's longevity research. The rationale for combining it with NR: sirtuins are NAD+-dependent enzymes, so raising NAD+ (via NR) while simultaneously activating sirtuins (via resveratrol) could theoretically amplify the longevity signal. This is the same logic behind the Sinclair Protocol (NMN + resveratrol) except Life Extension uses NR instead of NMN. A 2011 randomized trial by Timmers et al. ( PMID 22055504) found that resveratrol at 150 mg/day improved metabolic markers in obese men over 30 days, though subsequent trials have produced mixed results. The 250 mg dose in Life Extension's formula is within the range used in human trials.

Quercetin phytosome (150 mg) uses a phospholipid delivery system to improve quercetin's notoriously poor oral absorption. Standard quercetin has roughly 2% bioavailability; the phytosome form improves this approximately 20-fold. Quercetin's relevance to longevity comes from its emerging role as a senolytic agent, compounds that selectively clear senescent ("zombie") cells. The combination of dasatinib + quercetin is the most studied senolytic regimen in human trials (Hickson et al., 2019; PMID 31542391). Quercetin alone, without dasatinib, has weaker senolytic activity but still contributes to the overall anti-aging profile.

Fisetin (25 mg) is a flavonoid found in strawberries that showed dramatic lifespan extension in naturally aging mice (Yousefzadeh et al., 2018; PMID 30279143). Human data is limited (the AFFIRM-LITE trial is ongoing) but the preclinical signal was strong enough to generate significant research interest. The 25 mg in Life Extension's formula is a maintenance dose, not the higher intermittent doses being studied for acute senolytic effects.

The combined formula makes a reasonable scientific argument: NR raises NAD+ to fuel sirtuins, resveratrol activates those sirtuins, quercetin and fisetin clear senescent cells that accumulate with age. Whether this multi-target approach produces measurable health outcomes in humans beyond what NR alone provides is unproven, but the theoretical framework is sound and each component has independent research support.

Life Extension vs Tru Niagen: The Same Ingredient, Different Price

The active ingredient is identical: both use ChromaDex's patented Niagen NR chloride at 300 mg per capsule. Life Extension licenses Niagen from ChromaDex. The price difference (Life Extension $40.50 vs Tru Niagen $47-$49 for the standalone NR, or $44 vs $47 for Life Extension's Resveratrol Elite version that includes additional compounds) is pure brand margin. There is no chemical, manufacturing, or efficacy difference in the NR itself.

Feature	Life Extension 300mg	Tru Niagen 300mg	LE + Resveratrol Elite
Active NR dose	300 mg Niagen	300 mg Niagen	300 mg Niagen
Additional compounds	None	None	Resveratrol + quercetin + fisetin
Price/month	$40.50	$47-$49	$44
Price/day	$1.35	$1.58	$1.47
Annual cost	$486	$577	$528
USP monograph	Same Niagen NR	Same Niagen NR	Same Niagen NR
Company age	40+ years (1980)	~13 years (2012)	40+ years
Research investment	Licenses NR from ChromaDex	Funds NR clinical trials	Licenses NR
Higher-dose option	Take 2+ capsules	Pro 500mg, Pro 1000mg	Take 2+ capsules

The meaningful differentiator is the Resveratrol Elite version. For $3.50 more per month than the standalone Life Extension NR, you get three additional longevity-relevant compounds. For $3 less per month than Tru Niagen's standalone NR, you get the same NR plus three bonus ingredients. On a pure value-per-ingredient basis, Life Extension's Resveratrol Elite is the best deal in the NR category.

A less obvious but practically important difference: dose flexibility. Tru Niagen offers dedicated 500 mg and 1,000 mg capsules (Pro versions), meaning you can take a higher dose in a single capsule. Life Extension only offers 100 mg and 300 mg capsules, reaching 1,000 mg/day (the dose used in the most rigorous clinical trials) requires taking three or four capsules daily, which increases both cost and pill burden. If you intend to take NR at the clinical trial dose of 1,000 mg/day, Tru Niagen Pro is more practical and actually cheaper per milligram at that dose level ($3.87/day for 1,000 mg vs $4.05-$5.40/day for three or four Life Extension capsules).

For most people taking the standard 300 mg dose, however, Life Extension wins the value comparison. And for people building a multi-compound longevity stack, the Resveratrol Elite version offers substantially better value than buying Tru Niagen plus separate resveratrol, quercetin, and fisetin supplements.

Another consideration for international buyers: Life Extension products are more widely distributed globally than Tru Niagen. Life Extension is available through iHerb (which ships to 150+ countries), Amazon global marketplaces, and numerous international supplement retailers. Tru Niagen's direct distribution is more US-centric, with international availability primarily through ChromaDex's own channels and select retailers. If you live outside the US, Life Extension may be significantly easier (and cheaper with shipping) to obtain.

The argument for Tru Niagen over Life Extension comes down to one thing: ChromaDex directly funds and publishes clinical trials on Niagen. When you buy Tru Niagen, you are financially supporting the research that validates the ingredient. When you buy Life Extension's version, ChromaDex still receives a licensing fee, but a larger share of your money goes to Life Extension's margin. Whether you consider research funding a purchasing criterion is a values question, not a science question. For our full Tru Niagen analysis, see our Tru Niagen review.

Life Extension NAD+ vs NMN: The Bigger Question

Life Extension's best NAD+ product (Resveratrol Elite, $1.47/day for 300 mg NR + polyphenols) competes not just against Tru Niagen but against the entire NMN category. At $0.50-$1.33/day, NMN supplements deliver a different NAD+ precursor that produces equivalent NAD+ elevation in human trials. The head-to-head human comparison showed NR and NMN roughly doubled circulating NAD+ with no statistically significant difference. The value calculation depends on whether you weight NR's deeper safety dataset or NMN's lower cost more heavily.

Life Extension also sells NMN products in some markets, which creates an interesting competitive dynamic: the company itself does not appear to take a strong position on NR vs NMN superiority. Its product line hedges across both precursors, suggesting that even industry insiders do not consider the NR vs NMN question settled.

For someone building a longevity stack from scratch in 2026, the practical comparison is:

Approach	What You Get	Monthly Cost	NAD+ Elevation
LE Resveratrol Elite	300mg NR + resveratrol + quercetin + fisetin	$44	~51% (NR at 300mg)
NMN 500mg standalone	500mg NMN	$15-$30	~2× baseline (comparable)
NMN 500mg + resveratrol	500mg NMN + 500mg resveratrol (separate)	$25-$45	~2× baseline + sirtuin activation
Wonderfeel Youngr	900mg NMN + resveratrol + D3 + ergothioneine	$88	Higher dose NMN + multi-compound

The NMN + resveratrol approach (purchased separately) typically costs the same as or less than Life Extension's Resveratrol Elite while providing a higher NMN dose. The trade-off is convenience (two separate products vs one capsule) and NR's deeper clinical safety dataset. See our NMN supplement guide for specific product recommendations, and our NAD+ supplement comparison for the full precursor landscape.

Quality and Manufacturing: Life Extension's Track Record

Life Extension manufactures in GMP-compliant facilities, holds Non-GMO certification, publishes Certificates of Analysis, and has been in continuous operation since 1980. The company does not carry NSF Certified for Sport (Thorne NiaCel does for NR) or USP verification on the NAD+ Cell Regenerator specifically, but its manufacturing standards are well-established across four decades of operation.

The company's commitment to quality is reflected in several practices that distinguish it from newer supplement brands. Life Extension publishes detailed supplement facts panels with no proprietary blends, every ingredient and its dose are clearly listed. The company maintains an in-house scientific advisory board and funds independent research through the Life Extension Foundation. Its Life Extension Magazine publishes peer-reviewed content on longevity science.

For the NAD+ Cell Regenerator specifically, quality assurance is primarily a function of the Niagen raw material. ChromaDex controls NR purity at the ingredient level; Life Extension handles formulation, encapsulation, and distribution. The 2026 USP monograph for NR chloride applies to the Niagen molecule regardless of which brand packages it, meaning both Tru Niagen and Life Extension benefit from the same pharmacopeial reference standard.

Life Extension products are widely available through Amazon, iHerb, Vitacost, and the company's own website. Subscription pricing offers additional discounts. The company has a straightforward return policy and customer service infrastructure that comes with four decades of operational history: a practical advantage over newer brands where post-purchase support can be inconsistent.

Side Effects and Safety

Because Life Extension NAD+ Cell Regenerator uses the same Niagen NR as Tru Niagen, the safety profile is identical: no serious adverse events in clinical trials at doses up to 2,000 mg/day, mild GI discomfort as the most common report, and no clinically significant changes in blood chemistry across published dose ranges. The 40+ clinical trial safety dataset that supports NR applies equally to every product using the Niagen ingredient.

The Resveratrol Elite version adds three additional compounds, each with its own safety considerations. Trans-resveratrol is well-tolerated at doses up to 5,000 mg/day in short-term studies, though GI effects (nausea, flatulence, diarrhea) increase at higher doses. At the 250 mg dose in this product, side effects are rare. Quercetin is generally recognized as safe at supplemental doses, though it can interact with certain antibiotics and anticoagulants. Fisetin has limited human safety data but has shown no adverse effects in published pilot studies. If you take blood thinners, statins, or antibiotics, discuss the Resveratrol Elite version with your healthcare provider before starting: the quercetin and resveratrol components both have potential drug interaction pathways.

For people over 65 or those with existing liver or kidney conditions, starting at the 100 mg dose and monitoring basic metabolic panels after 4-6 weeks is a prudent approach. The Conze et al. Trial specifically evaluated liver enzymes (ALT, AST) and kidney function markers (creatinine, BUN) across all dose levels and found no concerning changes, but this was in healthy overweight adults, not in populations with pre-existing organ compromise. Your physician can assess whether NR supplementation is appropriate given your specific health profile.

The Resveratrol Elite version deserves specific safety attention because of its additional compounds. Resveratrol at the 250 mg dose is well below levels that cause GI disturbance in most people, but it does have estrogenic activity at higher concentrations, women with estrogen-receptor-positive cancer history should discuss resveratrol with their oncologist. Quercetin's interaction with fluoroquinolone antibiotics (ciprofloxacin, levofloxacin) is well-documented: quercetin can reduce antibiotic absorption. If you are prescribed fluoroquinolones, pause the Resveratrol Elite version during the antibiotic course.

For NR-specific side effects across all brands, see our NMN and NAD+ precursor side effects guide (which covers NR safety data alongside NMN).

Long-Term Use: What to Consider for Years of NAD+ Supplementation

NAD+ supplementation is typically positioned as a long-term or lifelong intervention, not a short course. If you start taking Life Extension's NAD+ Cell Regenerator at age 45, you may be taking it for decades. At $44/month for the Resveratrol Elite version, that is $528/year or $5,280 over ten years. Understanding what long-term use means (scientifically, financially, and practically) is essential before committing.

The longest published human NR trial (STEP 5-equivalent for NAD+) is approximately one year, with most trials running 6-12 weeks. We do not have decade-long safety data for any NAD+ precursor in humans. The available evidence, including the Conze et al. Dose-response trial and the Martens et al. Chronic supplementation trial, shows no safety signals at 1,000 mg/day over their respective durations. Extrapolating to decade-long use is reasonable but unproven.

One consideration for long-term NR users is methylation balance. Every molecule of NR converted to NAD+ consumes methyl groups in the downstream metabolism. Over years, this theoretical methylation drain could affect homocysteine levels, gene expression patterns, and other methylation-dependent processes, particularly in people with MTHFR gene variants that already compromise methylation efficiency. Adding TMG (trimethylglycine, 500-1,000 mg/day) or a B-complex supplement as methylation support is a common practitioner recommendation for long-term NAD+ supplementation. Life Extension sells both TMG and B-complex products that integrate naturally into a protocol alongside their NAD+ line.

Another long-term consideration: monitoring. Blindly taking an NAD+ precursor for years without measuring whether it is actually raising your NAD+ levels or affecting relevant biomarkers is supplementing on faith rather than evidence. Companies like Jinfiniti offer intracellular NAD+ testing ($149/test), and standard blood panels can track markers that NAD+ supplementation might influence (homocysteine, inflammatory markers, liver function, fasting glucose). Annual testing provides a feedback loop that justifies continued supplementation, or identifies when it is time to reassess.

Finally, the competitive landscape will change. New NAD+ precursors, improved delivery systems, and longer clinical trials will continue to reshape what the optimal NAD+ strategy looks like. Committing to a specific product for decades is less important than staying informed and willing to switch when evidence warrants it. Life Extension's broad product line (which includes both NR and NMN options) gives customers flexibility to pivot without switching brands entirely.

How Life Extension NAD+ Fits Into a Complete Longevity Protocol

NAD+ supplementation is one component of a multi-factor longevity strategy. Exercise (particularly resistance training and zone 2 cardio), sleep optimization, caloric moderation, and stress management all have stronger evidence for extending healthspan than any supplement. Life Extension's NAD+ products are best understood as an addition to these foundations, not a replacement for them.

A practical longevity stack built around Life Extension products might include the NAD+ Cell Regenerator + Resveratrol Elite as the NAD+ and sirtuin activation layer, their Two-Per-Day multivitamin for foundational micronutrients, their magnesium for sleep and metabolic support, vitamin D3+K2 for bone and immune health, and omega-3 for cardiovascular and cognitive support. This is not a Life Extension-specific recommendation: the same protocol can be built from any quality brands. But Life Extension's ecosystem makes it convenient to source everything from one manufacturer with consistent quality standards.

The total monthly cost of this approach (NAD+ + multivitamin + magnesium + D3+K2 + omega-3) runs approximately $80-$100 from Life Extension, which is comparable to what many people spend on a single premium supplement like AG1 or Wonderfeel Youngr. The difference is that each component in the targeted approach has its own independent clinical evidence base, at a verified dose, for a specific mechanism, rather than hoping that a multi-ingredient blend provides effective amounts of everything.

Who Should Buy Life Extension NAD+

Life Extension NAD+ Cell Regenerator (especially the Resveratrol Elite version) is the best choice for people who want NR at a fair price, prefer a multi-compound longevity stack in a single capsule, trust established supplement companies with decades of operation, or are already Life Extension customers building a brand-consistent protocol.

Buy Life Extension NAD+ Cell Regenerator + Resveratrol Elite if:

• You want NR + polyphenol stack at the lowest available price, $44/month for four active compounds
• You follow the Sinclair-style longevity protocol (NAD+ precursor + sirtuin activator) and want it in one capsule
• You want the deeper NR clinical safety dataset but find Tru Niagen's premium unjustified for the same molecule
• You are already a Life Extension customer and want to keep your supplement stack within one brand ecosystem

Buy the standalone 300 mg Cell Regenerator if:

• You want pure NR without additional compounds, perhaps because you already take resveratrol separately
• You want the flexibility to adjust your polyphenol dose independently of your NR dose

Consider NMN instead if:

• Budget is the primary factor, NMN delivers equivalent NAD+ elevation at $15-$30/month
• You want a higher daily dose without proportional cost increase
• You find NMN's 20+ published human trials sufficient for your evidence threshold
• You prefer a precursor one step closer to NAD+ in the metabolic pathway

For NMN product comparisons with verified purity data, see our NMN supplement guide. For the complete NAD+ supplementation landscape, see our NAD+ supplement guide.

Frequently Asked Questions

Is Life Extension NAD+ the same as Tru Niagen?

The active ingredient is identical, both use ChromaDex's patented Niagen nicotinamide riboside chloride at 300 mg. Life Extension licenses Niagen from ChromaDex. The difference is brand and price: Life Extension costs roughly 20-30% less than Tru Niagen for the same molecule. The Resveratrol Elite version adds trans-resveratrol, quercetin, and fisetin, compounds Tru Niagen does not include.

Which Life Extension NAD+ product should I buy?

For most people, the NAD+ Cell Regenerator and Resveratrol Elite ($44/month) is the best value, you get 300 mg NR plus three additional longevity compounds for just $3.50 more than the standalone NR. The standalone 300 mg is better if you already take resveratrol and quercetin separately or prefer a single-ingredient approach. The 100 mg version is only worthwhile as an NR trial at minimal cost.

Is Life Extension NAD+ better than NMN?

Neither NR nor NMN has demonstrated superiority for health outcomes in published clinical trials. The first direct human comparison showed both approximately doubled circulating NAD+ over 14 days. NR (Life Extension's ingredient) has more published safety data (40+ trials). NMN costs less per milligram. The choice depends on whether you weight evidence depth or cost more heavily. See our NMN vs NR comparison for the full analysis.

Can I take Life Extension NAD+ with other supplements?

The standalone NR version has minimal interaction concerns. The Resveratrol Elite version contains quercetin and resveratrol, both of which can interact with blood thinners (warfarin), certain antibiotics (fluoroquinolones), and statins. Consult your healthcare provider if you take these medications. TMG (trimethylglycine) is commonly added alongside NR to support methylation balance. See our supplement interaction guide for detailed pairing information.

How long does it take Life Extension NAD+ to work?

NAD+ elevation is measurable within hours of a single NR dose. Sustained increases in whole blood NAD+ are detectable at 2 weeks, with the Conze et al. Trial showing 51% elevation at 300 mg/day within 2 weeks. Whether you "feel" anything is subjective, some users report improved energy within 1-2 weeks, while others notice no perceptible change despite measurable NAD+ increases. NAD+ supplementation is a long-term strategy, not an acute intervention.

Does Life Extension NAD+ need to be refrigerated?

No. NR chloride is more thermally stable than NMN and does not require refrigeration. Standard room-temperature storage away from direct sunlight is sufficient. The Resveratrol Elite version's additional compounds (resveratrol, quercetin, fisetin) are also stable at room temperature.

Is the 100 mg dose worth taking?

The Conze et al. Dose-response trial showed 100 mg/day raised NAD+ by 22% within 2 weeks: a real but modest increase. If budget is extremely tight or you want to test NR tolerance before committing to a higher dose, 100 mg is a reasonable starting point. For meaningful NAD+ replenishment, most researchers and clinicians recommend 300 mg or higher.

Where can I buy Life Extension NAD+ Cell Regenerator?

Life Extension products are widely available through Amazon, iHerb, Vitacost, Walmart.com, and the company's own website (lifeextension.com). The Life Extension website typically offers the best subscription pricing and periodic sales (20-25% off during promotional events). Amazon prices fluctuate but are generally competitive with the brand website. For international shipping, iHerb often provides the broadest delivery coverage.

Can I take Life Extension NAD+ with NMN?

Some longevity practitioners recommend combining NR and NMN for "dual pathway" NAD+ support, though no published clinical trial has tested this combination head-to-head against either precursor alone. Both converge on the same NAD+ synthesis pathway (NR → NMN → NAD+), so the theoretical additive benefit is uncertain. If you choose to combine them, start with lower doses of each and monitor for over-methylation symptoms (irritability, insomnia). Adding TMG is advisable. See our NAD+ supplement guide for stacking considerations.

Is the Resveratrol Elite version worth the extra $3.50/month?

For most people, yes. The standalone NR (300 mg at $40.50) gives you one active compound. The Resveratrol Elite ($44) gives you four: NR, trans-resveratrol, quercetin phytosome, and fisetin. Buying those three additional compounds separately would cost $30-$50/month, making the $3.50 premium for Life Extension's combined formula an exceptional value. The only reason to prefer the standalone is if you already take those polyphenols at specific doses from other sources.