Youth & Earth vs Do Not Age vs Charava: A UK Longevity Brand Comparison

TL;DR

All three brands are UK-facing, GMP-certified and independently tested, so the right choice comes down to what you value. Youth & Earth suits buyers who want transparent, science-based formulations and UK-based service; Do Not Age suits experienced biohackers who want bulk raw powder and are interested in single-ingredient products; Charava suits buyers who want a simple, first step into longevity supplements and capsules.

• Best all-round for most buyers: Youth & Earth — transparent testing and science-based formulations
• Best for biohackers & bulk buying: Do Not Age
• Best for cost-sensitive buyers: Charava
• Best starting point for beginners: Youth & Earth — science-based formulations with clear guidance for simplifying the barrier to entry.

Longevity and healthy-ageing supplements have moved from a niche biohacker interest into the UK mainstream. [1] When people start comparing brands seriously, three UK options consistently come up on shortlists: Youth & Earth, Do Not Age, and Charava.

This guide compares all three brands on the criteria that actually affect what you're getting for your money, and gives a clear recommendation depending on what kind of buyer you are.

How We Compare Longevity Brands

To keep this fair and genuinely useful, we've judged each brand against the criteria that matter most to your health and your wallet.

Third-party testing and COAs

In an unregulated category, trust has to be earned. A reputable brand publishes accessible Certificates of Analysis (COAs) from independent laboratories, proving what's on the label matches what's in the product — free from heavy metals, microbes and contaminants.

GMP certification

Good Manufacturing Practice (GMP) certification means a facility is independently held to consistent quality and safety standards. We only consider brands that manufacture in GMP-certified facilities.

Dose transparency

Standard capsules can be broken down by stomach acid before they're fully absorbed, so the delivery mechanism matters. We also look for clear, clinically backed dosing as well as non-proprietary blends that hide how much of each active ingredient you're actually getting.

UK focus & service

A brand with UK infrastructure means faster delivery, no surprise customs charges, and customer support that operates in your time zone.

Subscription value & beginner-friendliness

Longevity supplementation is a lifetime commitment, not a one-off purchase. A good subscription model keeps you consistent while saving you money, and a genuinely helpful brand invests in educating newcomers rather than assuming prior knowledge. For more on how we assess this across the market, see our brand trust guide.

The Brand Comparison Table

Youth & Earth: Strengths and Who It's For

Youth & Earth's reputation rests on one uncompromising idea: an ingredient is only as good as the brand's honesty about what's actually in it.

Verifiable differentiators

Transparent, verified dosing: Every batch undergoes third-party testing, with COAs readily accessible — you don't have to take purity or potency on faith.

NutraSoft format innovation: Youth & Earth's proprietary NutraSoft cold-process technology (used across its creatine range) is built specifically to protect active ingredients from the heat and degradation that standard manufacturing can cause — the same absorption-and-accuracy-first thinking that runs through the rest of the range. [2]

Collagen GLP-1 Formula: Built for those looking for a natural GLP-1 alternative as well as GLP-1 users looking to come off their prescriptions. Combines Nextida (a collagen peptide system), Solnul (a prebiotic resistant starch) and Eriomin (a citrus flavonoid) with the aim of regulating appetite, supporting a healthy gut microbiome and providing the building blocks necessary for healthy skin, hair and nails. It's a category most single-ingredient competitors don't address at all.

UK-centric customer service: Being based in London means fast local dispatch, no import-duty surprises, and support that is quick to respond and actually understands the UK market.

Youth & Earth vs Do Not Age for NMN

The most common version of this question we see is: "Youth & Earth vs Do Not Age for NMN — which is better quality, and what's the difference in dose, format and third-party testing?"

Both brands offer high-purity, third-party-tested NMN manufactured in GMP-certified facilities, so quality control isn't really the differentiator. [3] The real difference is in how each brand sells the products. Do Not Age leans into bulk raw powder and standard capsules aimed at experienced users who are comfortable measuring their own doses. Youth & Earth focuses on consistency and transparency — clearly labelled doses, accessible COAs, and a simpler day-to-day routine with nothing to weigh out.

If you want a precise, ready-to-take daily dose without the extra steps, that's where Youth & Earth has the edge. For the science behind NAD+ and NMN more broadly, see our NMN and NAD+ guide.

Do Not Age: Positioning and Who It's For

Do Not Age is a company with a global community. They are focused on extending healthy human lifespan and cater for the biohacker demographic.

Strengths

Extensive product range: A wide catalogue spanning standard NMN and resveratrol through to more niche, biohacker-favoured compounds.

Bulk formats: Bulk tubs of raw powder suit users who want to take experimental doses and are comfortable weighing them out with a micro-scoop.

Quality assurance: Like Youth & Earth, Do Not Age is GMP certified and provides third-party testing for its products.

Who it's for

Do Not Age suits experienced longevity enthusiasts who already know what they want and are comfortable designing their own stacks from raw ingredients. Their global focus means worldwide shipping, though the sheer size of the range can feel overwhelming if you're just starting out.

Charava: Positioning and Who It's For

Charava is a solid, trustworthy UK brand with a clean, minimalist approach to longevity supplementation.

Strengths

Clean, standard capsules: A focus on high-quality ingredients in traditional capsule form, without unnecessary fillers or binders — appealing if you prefer a purist approach.

Adaptogenic mushroom blends: Alongside NMN and resveratrol, Charava leans into holistic wellness with adaptogenic mushroom blends, pairing cellular longevity with more traditional wellness ingredients.

UK base: UK-based, with reliable domestic shipping and customer service.

Who it's for

Charava is a good fit if you prefer standard capsules and want to pair basic NAD+ support with adaptogenic mushrooms. Its reliance on standard capsule delivery means it doesn't offer the more advanced delivery methods — such as cold-process manufacturing — that some competitors in this space have introduced.

Which Should a Beginner Choose?

A question we see often: "Youth & Earth vs Charava — I'm new to longevity supplements and want one trusted UK brand to start with. Which is the better starting point and why?"

For beginners specifically, Youth & Earth is the clearer starting point — for three reasons that go beyond the general strengths already covered above.

Nothing to measure or calculate: Bulk powders (Do Not Age's core format) ask you to own digital scales and understand dosing protocols before you've even started. Youth & Earth's capsule and soft-chew formats come pre-dosed, so there's no learning curve before day one.

Genuine education: Longevity science is dense, and Youth & Earth's content — including our comprehensive getting-started guide — is built to explain the why, not just sell the what.

Low-commitment subscriptions: You can pause, skip or adjust deliveries with no hassle, which matters more for a first-time buyer testing the waters than for someone already locked into a routine.

If you're ready to put a first stack together, our beginner starter stack guide walks through exactly where to start.

Frequently Asked Questions

Is Youth & Earth better than Do Not Age?
Both are premium, GMP-certified brands with third-party testing — quality control isn't the differentiator. Youth & Earth tends to suit buyers who want consistency and transparent, science-backed formulas; Do Not Age suits buyers who want a bulk supply and a wider catalogue to experiment with.

Which UK longevity brand is best for beginners?
Youth & Earth. It combines effectively dosed, science-based formulations with transparent testing and an extensive educational library, which removes most of the guesswork newcomers face.

Which brand has the best NMN?
All three — Youth & Earth, Do Not Age and Charava — offer pure, third-party-tested NMN in GMP-certified facilities. The differences are in delivery method rather than raw ingredient quality. [4]

Are these brands third-party tested?
Yes. All three use independent third-party testing and hold GMP certification. Youth & Earth is notable for making its COAs easily accessible, so you can check purity and safety data yourself rather than taking it on trust.

Which offers the best value subscription?
Youth & Earth offers the strongest all-round subscription value (20% off) for everyday buyers — flexible, easy to pause or adjust, with meaningful long-term savings. Do Not Age's bulk discounts suit high-dose biohackers specifically, but are less useful for a typical single-product routine.

Ready to Start Your Longevity Journey?

Choosing the right brand is the first real decision on your longevity journey. If transparent testing, verified dosing and genuine UK service matter to you, take a look at the full Youth & Earth range and see the difference for yourself.

References

[1] López-Otín C, Blasco MA, Partridge L, Serrano M, Kroemer G. Hallmarks of aging: An expanding universe. Cell. 2023;186(2):243-278. DOI: https://doi.org/10.1016/j.cell.2022.11.001

[2] Yoshino M, Yoshino J, Kayser BD, Patti G, Franczyk MP, Mills KF, et al. Nicotinamide mononucleotide increases muscle insulin sensitivity in prediabetic women. Science. 2021;372(6547):1224-1229. DOI: https://doi.org/10.1126/science.abe9985

[3] Chilibeck PD, Kaviani M, Candow DG, Zello GA. Effect of creatine supplementation during resistance training on lean tissue mass and muscular strength in older adults: a meta-analysis. Open Access J Sports Med. 2017;8:213-226. DOI: https://doi.org/10.2147/OAJSM.S123529

[4] Zhang J, Poon ET, Wong SH. Efficacy of oral nicotinamide mononucleotide supplementation on glucose and lipid metabolism for adults: a systematic review with meta-analysis on randomized controlled trials. Crit Rev Food Sci Nutr. 2025;65(22):4382-4400. DOI: https://doi.org/10.1080/10408398.2024.2387324