What's stated, what isn't
What NAD+ 4u's site doesn't say, and what we do.
NAD+ 4u's site doesn't publish a certificate for its NAD+, and it doesn't name where it's made, beyond “certified medical-grade facilities”. We publish a batch Certificate of Analysis in every box, and say plainly that ours is made in the UK. NAD+ 4u does sell a wider range, including a subcutaneous option and an NMN supplement, which we don't.

What each site states
Comparing what's published, not what's assumed.
Both are pitched as 1000mg at-home NAD+. Where NAD+ 4u's site doesn't state a detail, the table says so rather than guessing.
| The NAD | NAD+ 4u | |
|---|---|---|
| Format | Pre-mixed 1000mg vial | Pen kit, 1000mg (format detail limited on their site) |
| Given with | Reusable metal auto-injector, pre-set depth | Pen (reusability and material not stated) |
| Third-party tested | Yes, to ≥99% purity | States third-party tested and GMP-certified |
| Certificate of analysis | In every box | Not provided on their site |
| Made in the UK | Yes | Not stated (“certified medical-grade facilities”) |
| Range | One focused NAD+ Kit | Pen kit, a subcutaneous option, and an NMN supplement |
Details for NAD+ 4u are as published on nadplus4u.com, August 2026. As with any at-home NAD+ kit, this is sold in the UK as a food supplement, not a licensed medicine.
Range vs one kit
Breadth against a single, stated kit.
NAD+ 4u may suit you better if
you want a wider range to pick from, including a subcutaneous option and an oral NMN and glutathione supplement.
The NAD could be the better fit if
you'd rather one kit with a batch Certificate of Analysis included, and NAD+ that states its country of manufacture.

The kit
What you get from The NAD.
One complete month at home: the pre-mixed vial, the reusable metal auto-injector, and the consumables to go with it.
- NAD+ 1000mgOne pre-mixed vial, third-party tested to ≥99% purity, with its Certificate of Analysis in the box.
- The reusable auto-injectorMetal-bodied, with a pre-set depth, so the routine is the same every time.
- Needles and wipesSingle-use, sterile, and enough for the month.
One kit, fully stated
See what we publish that a pen kit page might not.
The pre-mixed 1000mg vial and the reusable metal auto-injector, plus a month's needles and wipes, third-party tested to ≥99% purity with the batch certificate included, dispatched tracked from the UK.
The NAD is an independent brand with no connection to NAD+ 4u (nadplus4u.com). What we say about their range reflects nadplus4u.com in August 2026; their site is the source to check for anything current.