At Core Longevity, we carefully selected our Top 3 NMN supplements using the same principles that guide every product we review: Quality, Purity and Purpose.

NMN is one of the most talked-about compounds in modern longevity and healthy-ageing research, so we believe it is particularly important to look beyond the claims on the packaging. For this category, we focused on clearly identified NMN, transparent dosing, simple formulations and evidence of quality testing where available.

Our Top 3 — Naturecan NMN Capsules, Charava NMN 500mg and Naturecan Pure NMN Powder — were chosen because each offers a straightforward and transparent approach to NMN supplementation without unnecessary complexity.

Naturecan NMN Capsules take our number-one position because of their simple formulation, transparent 500mg dose of beta-NMN per capsule and the company's stated commitment to independent testing and batch quality information. We particularly like that the formula keeps unnecessary ingredients to a minimum.

Charava NMN 500mg earns its place because of its extremely minimalist formulation and strong focus on purity. With a clearly stated 500mg dose, plant-based capsule and high stated purity, it is a strong option for those looking for a straightforward NMN supplement from a British company.

Naturecan Pure NMN Powder completes our Top 3 because it represents the simplest approach of all: 100% NMN with nothing else added. With no capsule ingredients, flavourings, sweeteners or unnecessary fillers, it strongly reflects our preference for pure and transparent formulations.

For Core Longevity, our selection is not simply about choosing the highest dose. We want to know exactly what form of NMN is being used, how much is provided and what else has been added to the product.

Together, these three products offer different ways to supplement with NMN while remaining true to the principles we value most: transparent ingredients, clean formulations and a clear purpose.

As NMN remains an emerging area of longevity research, we do not view it as a supplement that can guarantee a longer life. Instead, we are interested in its role as a NAD+ precursor and its growing relevance within research into cellular energy and healthy ageing.

Core Longevity focus: Quality • Purity • Purpose

Charava NMN

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At Core Longevity, we chose Charava NMN 500mg as one of our Top 3 NMN supplements because of its strong focus on simplicity, purity and transparent dosing.

Each capsule provides a clearly stated 500mg of Nicotinamide Mononucleotide (NMN), with the only other ingredient being the hypromellose vegetable capsule. We particularly like this minimalist approach, as the formula avoids unnecessary blends, flavourings and additional ingredients that do not serve a clear purpose.

Charava states that its NMN is 99.8% pure and independently third-party tested for quality and safety, with a Certificate of Analysis available. The product is also vegan and free from artificial colours, flavours and preservatives.

For Core Longevity, this is exactly what we look for in an emerging longevity supplement: a clearly identified active ingredient, a transparent dose and a straightforward formulation.

Charava is also a British longevity-focused company, making it a particularly relevant choice for our UK-focused Top 3. Its combination of a meaningful 500mg serving, minimalist formulation and stated commitment to independent testing makes it a strong option for anyone interested in exploring NMN without unnecessary complexity.

Core Longevity Rating

Purity: ★★★★★ 9.8/10
Clean Formula: ★★★★★ 10/10
Price & Value: ★★★★½ 9/10
Verified Quality: ★★★★★ 9.5/10
Purpose: ★★★★★ 10/10

Overall: ★★★★★ 9.6/10

Core Longevity Verdict:

A remarkably clean and straightforward NMN supplement that strongly reflects the Core Longevity principles of Quality, Purity and Purpose.

We particularly like the clearly stated 500mg dose, minimalist two-ingredient formula and Charava's stated focus on purity and third-party testing. The use of a simple vegetable capsule means there are no unnecessary sweeteners, flavourings or complex blends to consider.

The only reason we have not awarded a perfect overall score is the premium price compared with some other NMN products. However, for those prioritising a simple formulation, high stated purity and transparent dosing, Charava is one of the strongest NMN products we found.

YOUTH&EARTH NMN Capsules

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At Core Longevity, we chose Youth & Earth NMN Capsules as one of our Top 3 NMN supplements because of the company's strong focus on purity, transparency and quality testing.

Youth & Earth's NMN uses β-Nicotinamide Mononucleotide (NMN) and is available in different capsule strengths. The company states that its NMN is pharmaceutical grade and independently tested, with purity reported at more than 99%. It also provides information about testing for factors including purity, potency and contaminants.

The capsule formula combines NMN with rice flour and a vegetable cellulose (HPMC) capsule. While this makes the product slightly less minimalist than a pure NMN powder or a simple two-ingredient capsule, the formulation remains relatively straightforward and avoids unnecessary flavourings, added sugars and complex proprietary blends.

Quality assurance is another major reason we selected Youth & Earth. The company states that its products are manufactured in GMP-certified facilities, while its NMN is independently laboratory tested and supported by available batch-level quality information.

For Core Longevity, Youth & Earth earns its place in our Top 3 because it combines a clearly identified form of NMN with a strong stated emphasis on purity, manufacturing standards and independent testing. While the inclusion of rice flour means it is not quite as minimalist as some of our cleanest NMN choices, its focus on transparency and quality assurance makes it a strong option for those interested in exploring NMN supplementation.

Core Longevity Rating

Purity: ★★★★★ 9.8/10
Clean Formula: ★★★★★ 9.5/10
Price & Value: ★★★★½ 9/10
Verified Quality: ★★★★★ 10/10
Purpose: ★★★★★ 10/10

Overall: ★★★★★ 9.7/10

Core Longevity Verdict:

A high-quality NMN supplement with a particularly strong focus on purity and verification. We especially like Youth & Earth's stated commitment to independent testing, high-purity NMN and GMP manufacturing standards.

The inclusion of rice flour means the capsule is not quite as minimalist as a pure NMN powder, which is why it scores slightly below a perfect mark for Clean Formula. However, the overall formulation remains straightforward and free from unnecessary sugars, flavourings and complex proprietary blends, making it a strong fit with the Core Longevity principles of Quality, Purity and Purpose.

KIKI HEALTH NMN

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At Core Longevity, we chose KIKI Health NMN – 60 Vegicaps as one of our Top 3 because it offers an exceptionally clean, simple and transparent NMN formula.

Each capsule provides a clearly stated 500mg of β-Nicotinamide Mononucleotide (NMN). The ingredient list is particularly impressive from a Core Longevity perspective, containing simply NMN and a hypromellose vegetable capsule, with no added sugars, flavourings, preservatives or unnecessary fillers.

KIKI Health states that its NMN has a purity level of at least 99.8% and is produced using an enzymatic manufacturing process. The company also states that each batch is screened and quality checked before encapsulation.

For Core Longevity, this simplicity is one of the product's biggest strengths. When looking at emerging longevity supplements such as NMN, we believe consumers should be able to clearly see what they are taking, how much they are taking and why every ingredient is included.

KIKI Health is also a UK-based company, and its wider approach focuses on transparent sourcing and avoiding unnecessary additives, binders and fillers. For us, the combination of a meaningful 500mg dose, high stated purity and minimalist two-ingredient formula makes this one of the strongest examples of clean NMN supplementation in our Top 3.

Core Longevity Rating

Purity: ★★★★★ 9.8/10
Clean Formula: ★★★★★ 10/10
Price & Value: ★★★★½ 9/10
Verified Quality: ★★★★★ 9.5/10
Purpose: ★★★★★ 10/100

Overall: ★★★★★ 9.3/10

Core Longevity Verdict:

A remarkably clean and straightforward NMN supplement that strongly reflects the Core Longevity principles of Quality, Purity and Purpose.

We particularly like the clearly stated 500mg dose, the minimalist ingredient list and KIKI Health's stated focus on high purity and batch quality checks. With no unnecessary flavourings, sweeteners, colours, preservatives or fillers, the formula delivers exactly what we want to see from a longevity supplement: a clearly identified active ingredient with nothing unnecessary added.

The only reason we have not awarded a perfect overall score is that NMN remains an emerging area of longevity research, and we would always encourage people to view it as a potential tool for supporting cellular health rather than a supplement proven to extend human lifespan. However, when judging the product itself on formulation, purity and transparency, KIKI Health is one of the cleanest NMN supplements we found.

Important Information & Disclosure

Medical Disclaimer

The information provided on Core Longevity is for general educational and informational purposes only and should not be considered medical advice. Supplements are not intended to diagnose, treat, cure or prevent any disease. Always speak with a qualified healthcare professional before starting a new supplement, particularly if you are pregnant, breastfeeding, taking medication or have an existing medical condition.

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Some links on Core Longevity may, in the future, be affiliate links. This means that if you choose to purchase a product through one of these links, Core Longevity may earn a small commission at no additional cost to you. Our reviews and product selections are based on our independent assessment of Quality, Purity and Purpose, not simply on whether a company offers an affiliate programme.

We believe in being transparent with our readers and will always disclose affiliate relationships where they exist.