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Write a ReviewNAD+ supplements have gained attention in the healthy-aging category because NAD+ plays a central role in cellular metabolism and energy production. Life Extension NAD+ Cell Regenerator™ and Resveratrol Elite™ combine nicotinamide riboside with several plant-derived compounds commonly studied in healthy-aging research.
The formula provides 300 mg of NIAGEN® nicotinamide riboside chloride along with enhanced-bioavailability forms of trans-resveratrol, quercetin, and fisetin. Its strongest scientific support comes from research showing that nicotinamide riboside can increase NAD+ biomarkers, while the additional polyphenols are mainly supported by absorption and ingredient-level studies.
This review looks at the formula, research, safety, pricing, and overall value.
Quick Verdict
This is a relatively well-structured NAD+ supplement, offering a clinically studied 300 mg dose of NIAGEN®.
The components resveratrol, quercetin, and fisetin are delivered through improved absorption. This is backed up by human pharmacokinetic studies, and the final product has been demonstrated in a published clinical trial to have a wide anti-aging effect.
It is best not to consider it a clinically effective anti-aging product, but rather a supplement that supports NAD+.
What Is Life Extension NAD+ Cell Regenerator and Resveratrol Elite?
Life Extension NAD+ Cell Regenerator and Resveratrol Elite is formulated as a dietary supplement to help support NAD+ levels and healthy cellular metabolism once daily. There are 30 vegetarian capsules in each bottle.
It contains enhanced-bioavailability formulations of 10mg trans-resveratrol, 5mg quercetin, and 0.4mg fisetin in addition to 300mg of NIAGEN® nicotinamide riboside chloride in each capsule. The formula is vegetarian, gluten-free, non-GMO, and is recommended to be taken once a day before or after meals.
How Does Life Extension NAD+ Cell Regenerator and Resveratrol Elite Rate?
Brand Highlights
- Established U.S. supplement company founded in 1980.
- More than four decades in the wellness industry.
- GMP-registered with NSF International.
- Conducts raw-material and finished-product testing.
- Certificates of Analysis available upon request.
- Offers a 365-day return framework for qualifying purchases.
Key Ingredients
- 300 mg NIAGEN® Nicotinamide Riboside
- Resveratrol Elite™
- Bio-Quercetin®
- Bio-Fisetin®
Pros
- Provides 300 mg of clinically studied NIAGEN®.
- Requires only one capsule per day.
- Uses enhanced-bioavailability polyphenol formulations.
- Clearly discloses active ingredient amounts.
- Vegetarian, gluten-free, and non-GMO.
- Comes from a long-established supplement manufacturer.
Cons
- Costs $45 for a 30-day supply.
- Contains only 10 mg of actual trans-resveratrol.
- Quercetin and fisetin amounts are relatively small.
- No clinical trial appears to evaluate the complete finished formula.
- Increased NAD+ does not prove meaningful anti-aging effects.
Product Specifications
| Specification | Detail |
|---|---|
| Product Type | NAD+ / healthy-aging supplement |
| Form | Vegetarian capsules |
| Capsules Per Bottle | 30 |
| Serving Size | 1 capsule |
| NIAGEN® | 300 mg |
| Trans-Resveratrol | 10 mg |
| Quercetin | 5 mg |
| Fisetin | 0.4 mg |
| Suggested Use | 1 capsule daily |
| One-Time Price | $45.00 |
| AutoShip Price | $38.50 |
| Supply Duration | 30 days |
| Availability | Check Availability on Amazon |
About the Manufacturer
Life Extension was established in 1980 as a U.S.-based supplement and wellness company. It has been in business for over 40 years and provides a wide selection of vitamins, minerals, herbs, and specialty nutritional supplements.
Product testing and quality of the manufacturing process are a key priority at Life Extension. The company says it tests raw materials and finished products for identity, potency, purity, and contaminants. It can also supply Certificates of Analysis on request and is GMP-registered by NSF International.
The practices benefit the brand’s manufacturing integrity; however, the quality control practices do not guarantee that all manufactured Life Extension products have been clinically tested.
How Does Life Extension NAD+ Cell Regenerator and Resveratrol Elite Work?
The formula is built primarily around nicotinamide riboside, a precursor that the body can use to produce NAD+. NAD+ participates in cellular metabolism, energy production, and several biochemical pathways involved in normal cell function.
NIAGEN® is a branded form of nicotinamide riboside chloride that has been studied in human clinical trials.
The formula also contains resveratrol, quercetin, and fisetin. These compounds normally have limited oral bioavailability, so Life Extension uses fenugreek-derived galactomannans designed to improve absorption.
The important distinction is that greater NAD+ levels and improved ingredient absorption are measurable biological effects. They do not automatically prove stronger energy, cognitive, cardiovascular, or longevity outcomes.
Key Ingredients of Life Extension NAD+ Cell Regenerator and Resveratrol Elite
300 mg NIAGEN® Nicotinamide Riboside
The main ingredient is 300 mg of NIAGEN®.
A study indexed by PubMed and the U.S. National Library of Medicine, titled “Safety and Metabolism of Long-term Administration of NIAGEN (Nicotinamide Riboside Chloride) in a Randomized, Double-Blind, Placebo-controlled Clinical Trial of Healthy Overweight Adults,” found that 300 mg per day increased whole-blood NAD+ by approximately 51% after two weeks.
This provides direct support for the formula’s NAD+-related positioning, although it does not establish anti-aging or longevity benefits.
Resveratrol Elite™
The formula provides 10 mg of trans-resveratrol combined with fenugreek-derived galactomannans.
A study available through PubMed, NCBI, and the National Library of Medicine reported substantially greater bioavailability compared with unformulated resveratrol.
This supports improved absorption, but not necessarily stronger clinical outcomes at the 10 mg dose used here.
Bio-Quercetin®
The product provides 5 mg of actual quercetin in an enhanced-bioavailability blend.
A study indexed in PubMed and NCBI, titled “Enhanced Bioavailability and Pharmacokinetics of a Natural Self-Emulsifying Reversible Hybrid-Hydrogel System of Quercetin,” reported much higher systemic exposure compared with standard quercetin.
Again, the evidence supports absorption rather than proof of specific health outcomes.
Bio-Fisetin®
The formula also provides 0.4 mg of fisetin.
A study titled “Enhanced Bioavailability and Pharmacokinetics of a Novel Hybrid-Hydrogel Formulation of Fisetin Orally Administered in Healthy Individuals,” reported substantially greater bioavailability compared with unformulated fisetin.
The research supports the delivery technology, although clinical benefits from the amount used in this finished supplement remain uncertain.
Potential Benefits
- Supports NAD+ Levels
Human research directly supports the ability of the 300 mg NIAGEN® dose to increase NAD+ biomarkers. - Supports Cellular Energy Pathways
NAD+ plays an established role in cellular metabolism and energy production, making this a biologically plausible area of support. - Provides Enhanced-Absorption Polyphenols
The resveratrol, quercetin, and fisetin formulations have human pharmacokinetic evidence showing improved absorption compared with standard forms.
Safety and Side Effects
Nicotinamide riboside appears to be generally well tolerated at the 300 mg dose used in this product. In the eight-week NIAGEN® trial, adverse events did not differ significantly between NR and placebo groups.
Individual users may still experience digestive discomfort, nausea, headache, or other reactions.
People taking prescription medications, as well as those who are pregnant, breastfeeding, or managing a medical condition, should discuss the formula with a healthcare professional before use.
What Customers Are Saying
Here’s what customers had to say:
I’ve been taking this for a few weeks, and the capsules are easy to use. I haven’t noticed any dramatic changes in energy or focus, but I also haven’t had any issues with it. I’ll probably finish the bottle before deciding whether it’s worth continuing. – Michael Robins
I like that it only requires one capsule a day and the ingredient list is clearly explained. So far, the effects have been pretty subtle for me. It seems like a well-made supplement, but it’s difficult to tell how much difference it is making. – Adriana Simmons
The product fits easily into my routine, and I haven’t experienced any major side effects. I was hoping to notice more of a change in how I felt day to day, but the results have been hard to judge. The price is something I would consider before ordering again. – Daniel Stevans
How to Use
Life Extension recommends taking one capsule daily, with or without food, or according to the advice of a healthcare practitioner.
The product should be stored in a cool, dry place and used within the recommended daily intake.
How Much Does It Cost?
The current one-time price is $45.00 for 30 capsules, which works out to approximately $1.50 per day.
Life Extension also lists an AutoShip price of $38.50, bringing the daily cost down slightly.
The price is higher than some basic NAD+ precursor supplements, although the formula also includes specialized resveratrol, quercetin, and fisetin delivery systems.
Is Life Extension NAD+ Cell Regenerator and Resveratrol Elite a Scam?
No, it is a legitimate supplement sold by an established company with decades of manufacturing history.
The 300 mg NIAGEN® dose has human clinical evidence showing increased NAD+ biomarkers, and the additional polyphenol delivery systems have research supporting improved bioavailability.
The main limitation is that these findings should not be stretched into claims that the finished supplement slows aging, extends lifespan, or produces guaranteed improvements in energy or cognition.
Frequently Asked Questions
Q: How much NIAGEN® does each capsule contain?
A: Each capsule provides 300 mg of NIAGEN® nicotinamide riboside chloride.
Q: How many capsules should I take?
A: Life Extension recommends one capsule daily, with or without food.
Q: How long does one bottle last?
A: One bottle contains 30 capsules and provides approximately a 30-day supply.
Q: Does it increase NAD+?
A: Human research found that 300 mg of NIAGEN® increased whole-blood NAD+ biomarkers. This does not prove broader anti-aging benefits.
Q: Is the product vegetarian?
A: Yes, the formula is labeled vegetarian, gluten-free, and non-GMO.
Conclusion
Life Extension NAD+ Cell Regenerator and Resveratrol Elite has a solid core formula built around 300 mg of clinically studied NIAGEN®. Its strongest evidence concerns increasing NAD+ biomarkers, while its resveratrol, quercetin, and fisetin delivery systems have research supporting improved bioavailability.
The main limitation is the gap between biomarker or absorption data and clinically meaningful anti-aging outcomes. The finished product has not been shown to slow aging, improve longevity, or consistently enhance energy or cognition.
Overall, it is best viewed as a well-formulated NAD+-support supplement with useful delivery technology rather than a clinically proven anti-aging intervention.
Below are some of the best NAD+ Products products on the market today, in our opinion.
Verdict on Claimed Benefits: Below is our summary of the available evidence for the claimed benefits of below mentioned NAD+ Productss based on the available research:
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