Best Nicotinamide Riboside Supplements 2026: 5 Compared

Last updated: September 27, 2026 · Originally published August 21, 2026 · Published by Eternal Elixir

Edited by Elaine Fletcher, Researcher

Our pick among the best nicotinamide riboside supplements for 2026 is Eternal Elixir Nicotinamide Riboside 500mg. Each capsule holds 500mg of nicotinamide riboside chloride, the salt form used in the published human trials, and a 60-capsule bottle costs $59.99. That is $1.00 a serving and $0.60 per 300 mg of NR, the lowest cost per dose of the five products compared here. If you want the exact branded material used in those trials, Tru Niagen sells it at $1.63 per 300 mg capsule in its 30-count bottle.

What the Human Trials Show About Nicotinamide Riboside Dose

Nicotinamide riboside (NR) is a form of vitamin B3 that the body converts into NAD+, a coenzyme cells use in energy metabolism. NAD+ levels fall with age, and NR is one of two precursors, with NMN, that supplement brands sell to support them. Three human trials are worth knowing before you compare a single price.

The dose-response trial. Conze, Brenner and Kruger enrolled 140 healthy but overweight adults and gave them a placebo or 100, 300 or 1,000 mg of NR chloride a day for 8 weeks, with 35 people in each group (Scientific Reports, 2019). Whole blood NAD+ rose by 22%, 51% and 142% at the three doses, within two weeks, and stayed up for the rest of the study. There were no reports of flushing and no significant difference in adverse events between NR and placebo. ChromaDex, the company that makes the Niagen form of NR, funded the study, and two of the three authors were ChromaDex employees at the time. The paper says so, and you should weigh it.

The crossover trial. Martens and colleagues randomized 30 healthy middle-aged and older adults to 6 weeks of NR (500 mg twice a day) and 6 weeks of placebo in random order, and 24 completed both phases (Nature Communications, 2018). NAD+ in blood immune cells rose by about 60% compared with placebo, and NR was well tolerated. The authors declared no competing interests. They suggested that future trials look at blood pressure and arterial stiffness, which is a call for more research, not a result.

The head-to-head trial. In January 2026, Christen and colleagues published the first direct human comparison of NAD+ precursors (Nature Metabolism). They randomized 67 healthy adults to 1 g a day of NR, 1 g of NMN, 500 mg of nicotinamide or a placebo for 14 days. Compared with placebo, whole blood NAD+ rose by 49.4 µM with NR and 43.1 µM with NMN, roughly doubling from baseline. Nicotinamide did not raise it. The study was open-label and run by Nestlé researchers.

Evidence level: good for the narrow claim that oral NR raises NAD+ in human blood, in a dose-dependent way, and is well tolerated at the doses studied. Not shown: longer life, slower aging or any change in a disease outcome. If a product page promises more than that, it is ahead of the research. For the wider picture across both precursors, see our comparison of NAD+ supplements and how the precursors differ.

How to Read a Nicotinamide Riboside Label Before You Compare Prices

Most people compare NR supplements the wrong way round. They look at the bottle price first and the dose second. In this category that leads to bad decisions, because capsule strengths run from 300 to 500 mg and bottles hold anywhere from 30 to 180 capsules. Here is the order that works.

1. Find the NR form. NR is unstable on its own, so supplements use a salt. Nicotinamide riboside chloride is the form used in all three trials above, and Niagen is ChromaDex’s branded version of it. Thorne uses NR hydrogen malate instead. Both deliver NR, but the published dose-response work was done with the chloride form.

2. Read the serving size, not the capsule size. A label that says “500 mg per serving” can mean one 500 mg capsule or two 250 mg capsules, and the second bottle empties twice as fast. Divide the bottle price by the number of servings, never by the number of capsules.

3. Convert to cost per 300 mg. 300 mg is the middle dose in the dose-response trial and the strength of the most common capsules. Converting every product to a cost per 300 mg of NR lets you compare a 300 mg capsule with a 500 mg one fairly. It is a way to compare prices, not a dosing instruction.

4. Look for lot-level testing. “Third-party tested” means something only when a brand says what was tested and lets you see the result. A certificate of analysis matched to the lot number on your bottle is the useful version.

5. Read the other ingredients. Most NR capsules add a filler and a flow agent, which is normal. Our label lists only rice flour and a cellulose capsule. Tru Niagen lists microcrystalline cellulose, a vegetarian capsule and vegetable magnesium stearate, and Life Extension lists microcrystalline cellulose, a cellulose capsule, silica and vegetable stearate. Thorne adds a second active, 85 mg of betaine, which matters if you already take betaine (also called TMG) on its own and want to keep track of your total.

6. Check stock. A good price on a bottle you cannot buy is not a good price. One NR product ranked in an earlier version of this guide no longer appears in its brand’s store, so we replaced it.

The Best Nicotinamide Riboside Supplements Compared on Cost Per 300 mg

Every row is priced from the brand’s own product page and converted to cost per capsule and cost per 300 mg of NR. Prices are one-time purchase prices as of Sep 2026 and can change.

Two points about the table. First, the per-300 mg column is a price comparison, not a dose. You cannot split a capsule, so our 500 mg capsule costs $1.00 a day at one capsule and delivers 500 mg. Second, larger bottles change the picture for two competitors. Tru Niagen’s 90-count bottle costs $127.00, or $1.41 a capsule. Nootropics Depot’s 90-count bottle costs $64.99, or $0.72 a capsule. Both are still above our $0.60 per 300 mg.

1. Eternal Elixir Nicotinamide Riboside 500mg: Our Pick for Value Per Dose

Eternal Elixir makes Nicotinamide Riboside 500mg, and it is our pick because the arithmetic favors it. Each capsule holds 500 mg of beta-nicotinamide riboside chloride, the label serving is one capsule, and the bottle holds 60 capsules. At $59.99 that is $1.00 a serving and $0.60 per 300 mg of NR, the lowest figure in this comparison on both measures.

Key specs: 500 mg NR chloride per capsule, 60 capsules, 60 label servings. The only other ingredients are rice flour as a carrier and a cellulose capsule. See the full label and current price.

Two things set it apart beyond price. The first is dose density: 500 mg in a single capsule sits between the 300 mg and 1,000 mg arms of the dose-response trial, and the Martens trial used 500 mg per dose. The second is the single-active formula. The label declares one active at a stated amount, with no blend hiding the ratio, so you can check it against the research directly. Our product page says plainly that the finished product has not itself been tested in a clinical trial. The research is on the ingredient.

• Who it suits: buyers who have decided on NR and want the lowest cost per dose, and anyone who wants to add NMN, resveratrol or pterostilbene from the same order.
• Who it doesn’t suit: anyone who wants exactly 300 mg a day, since the capsule cannot be split, and anyone who wants the Niagen-branded material specifically.

2. Tru Niagen 300mg: The Exact Material Used in the Trials

Tru Niagen is the consumer brand of Niagen, the NR chloride material made by the company behind the dose-response trial. Martens and colleagues also used Niagen, and the NR arm of the 2026 head-to-head trial used Tru Niagen Pro. If you want the exact ingredient that was in the capsules in those studies, this is it.

Key specs: 300 mg Niagen NR chloride per capsule. The label says adults can take one capsule one to three times a day. One-time prices are $49.00 for 30 capsules ($1.63 each), $127.00 for 90 ($1.41 each) and $244.00 for 180. Other ingredients are microcrystalline cellulose, a vegetarian capsule and vegetable magnesium stearate. The brand says the product is tested by Alkemist Labs.

• Who it suits: buyers who want research traceability on the exact material and will pay a premium for it.
• Who it doesn’t suit: buyers comparing on cost per dose. The 30-count bottle costs $1.63 per 300 mg, 2.7 times our $0.60.

3. Nootropics Depot Nicotinamide Riboside: Lowest Bottle Price, With Lot COAs

Nootropics Depot’s NR capsules are the lowest-commitment way into this category. The 30-count bottle costs $34.99, the cheapest bottle here in absolute terms, at $1.17 per 300 mg capsule. Buy the 90-count at $64.99 and the cost falls to $0.72 a capsule, the lowest per-dose price among the competitors.

Key specs: 300 mg nicotinamide riboside per capsule, one capsule a day in the morning, with or without food. The product page lists a certificate of analysis for each lot, so you can match the lot number on your bottle to its test result. That is a more useful commitment than a generic testing badge. The product page text does not name the salt form.

• Who it suits: first-time NR buyers who want a month at the trial’s middle dose before committing, and buyers who want lot-level test results.
• Who it doesn’t suit: anyone who wants more than 300 mg in one capsule.

4. Life Extension NAD+ Cell Regenerator: Niagen for Less Than Tru Niagen’s 30-Count

Life Extension’s NAD+ Cell Regenerator uses the same Niagen NR chloride as Tru Niagen, at 300 mg per capsule, one capsule a day. The one-time price is $40.50 for 30 capsules, or $1.35 a capsule, and Life Extension’s AutoShip price is $36.00. That makes it a cheaper way to buy the trial material than Tru Niagen’s 30-count bottle.

Key specs: 30 vegetarian capsules, 300 mg Niagen NR chloride each. Other ingredients are microcrystalline cellulose, a vegetable cellulose capsule, silica and vegetable stearate.

• Who it suits: buyers who want the Niagen material and already shop with Life Extension.
• Who it doesn’t suit: buyers looking for the lowest cost per dose. At $1.35 per 300 mg it costs more than twice our $0.60.

5. Thorne NiaCel 400: For Athletes Who Need Sport-Tested Products

Thorne NiaCel 400 stands out on one credential. Its product page shows the NSF Certified for Sport mark, a program that screens for substances banned in sport, which is what tested athletes are usually told to look for.

Key specs: $74.00 for 60 capsules, one capsule a day, or $1.23 a capsule. Each capsule holds 415 mg of NR hydrogen malate and 85 mg of betaine anhydrous (trimethylglycine). Because the label gives the weight of the malate salt rather than the NR it delivers, we could not convert it to a cost per 300 mg of NR on the same basis as the others. We look at the brand’s wider range in our Thorne review and cost breakdown.

• Who it suits: drug-tested athletes who treat the sport-testing mark as a requirement.
• Who it doesn’t suit: buyers who want the chloride form used in the published dose-response trial, and anyone who wants NR without betaine.

What happened to Double Wood NR Malate? An earlier version of this guide ranked it fifth while it was backordered. It no longer appears in Double Wood’s store search, so we removed it. Double Wood’s NMN and NAD+ range is covered in our Double Wood Supplements review.

How We Ranked These Nicotinamide Riboside Supplements

Eternal Elixir makes Nicotinamide Riboside 500mg, and it is our pick. It sits first for the reasons in its entry. The other four are ordered on four criteria, applied the same way to each:

• Form and research traceability: is it NR chloride, and is it the exact material used in published human trials?
• Cost per 300 mg of NR: the one-time price divided into 300 mg doses, using the brand’s own label.
• Testing documentation: can you see a certificate of analysis for your lot, or only a claim that testing happens?
• Availability: is it in stock on the brand’s own store today?

What we did not do: we did not send competitor products to a lab, run a trial, or take all five ourselves. Every figure for the other products comes from that brand’s product page, read in September 2026.

NR vs NMN: Which Precursor Gets You More for Your Money?

There is one more calculation worth running before you buy, and most NR shopping guides skip it. NR is not the only NAD+ precursor. NMN is the other, and per milligram it usually costs less.

Until this year, nobody had compared the two directly in people. The 2026 head-to-head trial changed that: at 1 g a day for 14 days, NR and NMN raised whole blood NAD+ by similar amounts compared with placebo. It was a short, open-label study, but it suggests the precursor you choose matters less for NAD+ than price and tolerability do.

On price, our NMN 500mg costs $49.99 for 90 capsules of 500 mg, or $0.56 a serving, against $1.00 for 500 mg of NR. If your only goal is to support NAD+ at the lowest cost, that is worth weighing. Our NMN vs nicotinamide riboside guide covers the trade-offs in detail, and our NMN supplement rankings run the same cost-per-dose math on the other precursor. If you are looking at higher NMN doses, see our guide to 1000mg NMN supplements.

Where NR earns its price is research depth. The dose-response data in humans is cleaner for NR than for most alternatives. If that is what you are paying for, pay for it deliberately.

Stacking. Pterostilbene and resveratrol are the compounds most often paired with NR in combination formulas, and buying them separately usually costs less than a combination product. We sell Trans-Pterostilbene 500mg and Trans-Resveratrol 600mg as single-ingredient products for that reason, and our resveratrol rankings and pterostilbene comparison set them against other brands. If you would rather not choose, the NMN 1200mg Advanced Longevity Complex combines several of these in one capsule, though combinations always cost more per milligram than single ingredients. Our NMN vs resveratrol breakdown explains how the two work together.

Other formats. Renue by Science sells NR and NMN as powders and liposomal products, which are a different category from capsules and hard to compare per capsule. We cover that lineup in our Renue by Science review, and the premium end of the NMN market in our Omre NMN review.

How to Take Nicotinamide Riboside

Start with the label on the bottle you buy, because brands give different directions for similar capsules. Our label gives one 500 mg capsule per serving. Tru Niagen says one capsule one to three times a day. Nootropics Depot suggests one capsule in the morning, with or without food. Life Extension and Thorne both say one capsule a day.

Once or twice a day. The trials used both patterns. Martens and colleagues split 1,000 mg into two 500 mg doses a day, while the 2026 head-to-head trial gave the full 1 g once a day. Both raised NAD+. No trial has compared the two schedules directly, so pick the one you will stick to.

Morning or evening. No published trial has compared times of day for NR. Brands that name a time suggest the morning, and that is a sensible default rather than a research finding.

Give it two weeks, then judge on the label, not on feel. In the dose-response trial, blood NAD+ rose within two weeks and stayed up for the rest of the 8 weeks. None of the trials above measured whether people felt different, so do not expect a noticeable change from one bottle. What you can control is the dose, the form and the price.

Who Should Consider NR, and Who Should Skip It

NR makes sense if you want to support NAD+ levels with the precursor that has the clearest human dose-response data, you prefer a single declared active over a blend, and you are comfortable paying more per milligram than you would for NMN.

Skip it, or wait, if you expect to feel an immediate effect, since the trials measured blood NAD+ rather than how people felt. Talk to your doctor first if you are pregnant or breastfeeding, under 18, or take prescription medicine. If your only goal is the cheapest way to support NAD+, compare NMN before you buy.

Is Nicotinamide Riboside Safe?

In the trials above, NR was well tolerated at the doses studied. The dose-response trial found no flushing, the reaction that niacin is known for, and no significant difference in adverse events between NR and placebo at up to 1,000 mg a day for 8 weeks. The crossover trial also reported NR as well tolerated over 6 weeks. The highest dose we found in a published trial was 1,000 mg twice a day for 12 weeks, given to 40 sedentary men aged 40 to 70 with a high BMI. It caused no serious adverse events, and it also did not improve insulin sensitivity or body composition (Dollerup and colleagues, American Journal of Clinical Nutrition, 2018).

What those trials do not tell you is how NR behaves over years, or in people who were not studied. If you are pregnant or breastfeeding, under 18, or take prescription medicine, talk to your doctor before starting NR. Start with one capsule a day, follow the label on the product you buy, and add one new supplement at a time so you can tell which one is doing what.

Frequently Asked Questions

Which is the best nicotinamide riboside supplement?

Our pick is Eternal Elixir Nicotinamide Riboside 500mg: 500 mg of NR chloride in one capsule at $0.60 per 300 mg of NR, the lowest cost per dose in this comparison. Eternal Elixir makes it. Tru Niagen ranks second for research traceability, because its Niagen material is the form used in the main dose-response trial.

Add Nicotinamide Riboside 500mg to cart · $59.99

How much nicotinamide riboside should I take per day?

Published human trials have used 100 mg to 2,000 mg a day. In the dose-response trial, whole blood NAD+ rose 22% at 100 mg, 51% at 300 mg and 142% at 1,000 mg. Most products hold 300 to 500 mg per capsule. Follow the label on the product you buy and ask your doctor what suits you.

What is the best source of nicotinamide riboside?

NR occurs naturally in trace amounts in foods such as milk, far below the doses used in research. Every trial above used supplemental NR chloride. To reach 300 mg or more a day, a capsule is the only practical source.

How much does nicotinamide riboside cost per month?

At one capsule a day, a month of Eternal Elixir NR costs about $30, since one $59.99 bottle lasts two months. A 30-count bottle costs $34.99 from Nootropics Depot, $40.50 from Life Extension and $49.00 from Tru Niagen. Thorne NiaCel 400 works out to about $37 a month.

Is nicotinamide riboside chloride the same as NR?

Effectively yes. NR is unstable on its own, so supplements stabilize it as a salt, most often as a chloride. The label is telling you which salt carries the NR, not that a different compound is inside. NR hydrogen malate, used by Thorne, is an alternative salt.

Is NR better than NMN?

For raising NAD+, the first head-to-head human trial found no clear winner: 1 g a day of either raised whole blood NAD+ by similar amounts over 14 days. NR has more published dose-response data, and NMN usually costs less per milligram. Choose on price, form and the research you value.

Do nicotinamide riboside supplements actually work?

They do one thing reliably in human trials: raise NAD+ levels, in a dose-dependent way, with good tolerability. They have not been shown to extend lifespan, slow aging or change any disease outcome. Treat any stronger claim with skepticism.

What is the difference between NAD+ and nicotinamide riboside?

NAD+ is the coenzyme your cells use. NR is one of several raw materials the body converts into it. If a product says “NAD+” on the front, check the supplement facts: it may contain NR, NMN, niacinamide or NAD+ itself, and these are not interchangeable on dose or price.

When is the best time to take nicotinamide riboside?

No trial has compared times of day. Brands that give a time suggest the morning, with or without food. Take it at the same time each day and follow the label on your bottle.

Can you take NR and NMN together?

No published trial has tested the two combined. Both raised whole blood NAD+ by similar amounts in the 2026 head-to-head trial, so taking both mainly adds cost. If you want to try it, talk to your doctor first and keep the total dose within what the trials used.

Verdict: Which Nicotinamide Riboside Supplement Should You Buy?

Our pick: Eternal Elixir Nicotinamide Riboside 500mg at $0.60 per 300 mg of NR. It has the lowest cost per serving and per 300 mg in this comparison, a single declared active, and ships within 24 hours.

• If research traceability is what you are paying for: Tru Niagen, the exact material used in the main dose-response trial, at $1.63 per 300 mg in the 30-count bottle.
• If you want the smallest outlay or lot-level test results: Nootropics Depot, at $34.99 for 30 capsules.
• If you want Niagen for less: Life Extension NAD+ Cell Regenerator, at $1.35 a capsule.
• If you are a drug-tested athlete: Thorne NiaCel 400, for its sport-testing mark.

And if the numbers above convince you that NMN gives you more NAD+ precursor per dollar, that is a reasonable conclusion. The right answer depends on what you are buying: milligrams, or the research trail behind them.

More Buying Guides

• Longevity supplements compared across categories
• Mitochondrial supplements ranked
• All supplement guides
• The Eternal Elixir blog
• Shop the full Eternal Elixir range

Sources

1. Conze D, Brenner C, Kruger CL. 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. Scientific Reports. 2019;9:9772. PMID 31278280
2. Martens CR, Denman BA, Mazzo MR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults. Nature Communications. 2018;9:1286. PMID 29599478
3. Christen S, Redeuil K, Goulet L, et al. The differential impact of three different NAD+ boosters on circulatory NAD and microbial metabolism in humans. Nature Metabolism. 2026;8(1):62-73. PMID 41540253
4. Dollerup OL, Christensen B, Svart M, et al. A randomized placebo-controlled clinical trial of nicotinamide riboside in obese men: safety, insulin-sensitivity, and lipid-mobilizing effects. American Journal of Clinical Nutrition. 2018;108(2):343-353. PMID 29992272
5. Product pages read September 2026: Tru Niagen 300mg, Nootropics Depot Nicotinamide Riboside, Life Extension NAD+ Cell Regenerator, Thorne NiaCel 400 and our own Nicotinamide Riboside 500mg label.

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.