In-depth review
Longevity Box Review: UK NAD+ and Longevity Supplements
The verdict
Longevity Box is a UK, family-run brand focused on NAD+ and "healthspan" supplements. Its flagship is NMNH, alongside NMN, NR, resveratrol, TMG, spermidine, magnesium glycinate and more. The strong points are genuine: third-party testing (SGS and Campden BRI), no fillers or binders, and generous guarantees (a 60-day money-back and a 700-day purity guarantee). The science behind NAD+ boosters is promising but still emerging, so manage expectations and don't read the bolder claims as settled fact.
See the current range on the official Longevity Box store.
Visit Official Site →Overview
Longevity Box is a family business based in Warwickshire and Dorset that focuses on the NAD+ and longevity category, the supplements linked to cellular energy and aging research. Its standout product is NMNH, which it markets as a more potent, next-generation alternative to NMN.
What sets the brand apart on quality is its zero-filler approach (pure active ingredient, no binders, preservatives or bulking agents), vegan and allergy-friendly formulas, and third-party testing by labs SGS and Campden BRI. It backs products with a 60-day money-back guarantee and an unusual 700-day purity guarantee, plus free UK shipping over a threshold.
Context worth keeping in mind: NAD+ precursors like NMN, NMNH and NR are an active area of research, and a lot of the excitement comes from animal studies and early human work. They're a reasonable thing to try if you're interested in the space, but they are not proven to prevent age-related disease, and you'll see some marketing that runs ahead of the evidence.
What they sell
The brand's headline product, marketed as more potent than standard NMN. Third-party tested, 99% purity, refrigeration recommended.
Visit official site →The two most popular NAD+ precursors, for people who prefer the more widely studied options.
Visit official site →Often paired with NAD+ boosters; resveratrol is a polyphenol and TMG a methyl donor.
Visit official site →A wider range including high-strength magnesium glycinate, spermidine, sulforaphane and Urolithin A.
Visit official site →Who it's for
A good fit if you are a UK buyer interested in the longevity space and want filler-free, third-party-tested products with strong guarantees behind them.
Maybe not if you want supplements with long-term, proven outcomes, or you'd rather wait until there's more human evidence on NAD+ boosters.
Pros and cons
What's good
- Third-party tested (SGS, Campden BRI)
- No fillers, binders or bulking agents
- Generous 60-day money-back and 700-day purity guarantees
- Broad longevity range
- UK-based with free shipping over the threshold
What to keep in mind
- NAD+ science is still emerging
- Some marketing runs ahead of the evidence
- NMNH is best kept refrigerated
- Premium, niche-category pricing
Buying advice
If you're new to the category, the more widely studied NMN or NR is a reasonable starting point, with resveratrol and TMG often added alongside. Follow the label dose, and note NMNH is best stored in the fridge to keep it stable.
The 60-day money-back guarantee makes it low-risk to try. Buy from the official store for the current range, testing details and guarantees.
Check the latest supplements and offers on the official store.
Visit Official Site →Frequently asked questions
What are NMN and NMNH?
They are NAD+ precursors, compounds the body can use to support NAD+ levels, which are studied in connection with cellular energy and aging. The research is promising but still emerging, and they are not proven to prevent disease.
Are the products tested?
Longevity Box states its products are third-party tested by labs SGS and Campden BRI and are free from fillers and binders. Check current details on the official site.
Is there a guarantee?
Yes, the brand lists a 60-day money-back guarantee and a 700-day purity guarantee. Confirm the current terms before buying.