WHAT IF THE TIREDNESS ISN’T ABOUT SLEEP?
It could be NAD+. This essential coenzyme, found in every cell in your body, is what your cells use toproduce energy - and it naturally declines as you age, often before you’d expect.
↓50%
Significant decline in NAD+ levels with age
100+
Peer-reviewed clinical trials on NAD+ in humans
Every cell
In your body depends on NAD+ to produce energy
THE SCIENCE
Dr Mark Jinks: The Science of NAD+
NAD+ (nicotinamide adenine dinucleotide) is a vital coenzyme found in every cell. It helps convert food into energy (ATP), fuels cellular repair, and supports key processes like metabolism, DNA repair, and circadian rhythms.
As we age, NAD+ levels decline significantly, often dropping by more than half by our 60s. This loss is linked to reduced cellular function, increased inflammation, and other signs of aging.
Maintaining healthy NAD+ levels is a central focus of modern longevity science.
WATCH VIDEOWhat NAD+ does inside your cells
THE COST
Compare it to the alternative, and £350 looks different.
NAD+ IV therapy typically costs up to £800 for a session - and most clinics recommend repeating them every four to six weeks, plus a consultation each time. Some providers quote £1,800 for an introductory course alone.
NAD+ 4u Pen Starter Kit is an investment of £350 (or from £280/month on subscription) for a 30-day supply of self-administered doses at home.
NAD+ 4u Pen
Clinic IV drip
Cost
From £280 per month
£800 per session
Where
At home, or on the go
In clinic, booked appointment
Frequency
Self-administered, on your schedule
Repeat visits every 4–6 weeks
Clinical oversight
Nursing team on call
In-room only, per visit
Why the Pen
No clinic.
No appointment.
No learning curve.
The Pen is designed to fit into your day, not the other way round. No vial to draw up, no clinic chair, nothing to schedule - it takes just a couple of minutes, wherever you happen to be.
Your kit ships with a travel casebuilt for exactly that: through an airport, in a gym bag, or away for a weekend, not just sitting in a fridge athome.
At home · On the road · A couple of minutes · No appointment needed
Made to the highest standard.
Our NAD+ formulation is dosed to the levels used in peer-reviewed clinical trials, manufactured in certified facilities, and third-party tested for purity and potency.
THE MEDICAL TEAM
Backed by science, powered by people
Developed with guidance from our in-house medical team, every NAD+ 4u product is shaped by clinical oversight, ingredient research, and quality testing.
LEARN MORE
Head of Nursing
Maddie Booth
Leads customer-facing nursing support and helps answer questions, including first-time pen setup.
Chief Medical Officer
Dr Mark Jinks
Oversees clinical protocols to ensure the highest standards of safety, governance and medical integrity.
Peer-reviewed science
NAD+ is one of the fastest-growing areas in longevity research. These studies highlight strong peer-reviewed evidence, from clinical trials to systematic reviews supporting these claims.
