A Cellular Investigation
There is one coenzyme inside every cell that determines how quickly you age.
Its name is NAD+.
It powers more than 500 cellular functions. It repairs damaged DNA. It fuels every mitochondria, the microscopic engines responsible for the energy you feel, or no longer feel, when you wake in the morning.
And by the time you turn 50, your body has lost roughly half of it.
This is not marketing. It is the documented finding of researchers at Harvard, MIT, and Washington University. Today, the gradual collapse of NAD+ is recognized by leading longevity scientists as one of the root mechanisms of biological aging.
"By middle age, our NAD+ levels have plummeted to half that of our youth."
Integrative Medicine: A Clinician's Journal, February 2020
For decades, science searched for a way to put NAD+ back. Direct injection failed: the molecule was too unstable. Standard oral supplements failed: stomach acid destroyed them before absorption.
Then came the precursors. Three of them. Each more refined than the last. And each, when paired with the right delivery technology, capable of doing something previously thought impossible.
The Numbers
By 60, the symptoms become impossible to ignore.
You wake up tired. Focus collapses by mid-afternoon. Recovery takes longer than it used to. Sleep is shallower. None of this is your imagination.
Drop in NAD+ levels by middle age
Cellular processes powered by NAD+
Lifespan extension in mouse studies after NAD+ restoration
Published studies on NAD+ precursors
The Pathways
Three molecules. Three speeds. One destination.
Nicotinamide Riboside (NR) was the first NAD+ precursor to enter wide clinical study. It enters the body and converts into NMN before becoming NAD+.
Nicotinamide Mononucleotide (NMN) works one step further down the pathway. By skipping the first conversion, more of what you take ends up as usable NAD+ inside your cells.
NMNH (Nicotinamide Mononucleotide Hydrogen) is one of the most potent NAD+ precursors available. Research shows it can elevate NAD+ levels more rapidly and efficiently than traditional forms, delivering deeper support for mitochondrial energy production and DNA repair.
The Absorption Problem
But the right molecule still fails if your stomach destroys it before absorption.
This is the silent reason most NAD+ supplements deliver disappointing results, regardless of dose or purity.
Average bioavailability after stomach acid degradation. The vast majority of the active compound is destroyed before reaching your bloodstream.
A protective phospholipid sphere shields each molecule through digestion, delivering it intact to the cellular targets where it can do measurable work.
Every GenuinePurity® formula uses Liposomal Encapsulation Technology, the same delivery system used in cutting-edge pharmaceutical research. This is the only reason any of this matters.
Choose Your Protocol
Three formulas. One decision.
Every Subscribe & Save member locks in their lowest possible price for as long as they remain subscribed. Pause, swap, or cancel anytime, with zero retention pressure.
Decision Guide
Still not sure which one?
Here is how members typically decide.
"I want to start somewhere proven, without overcomplicating it."
Begin with Liposomal NMN. It is our flagship for a reason: 25+ years of anti-aging formulation behind it, the lowest entry price, and the foundational science that started this entire category. If you respond well, many members upgrade to NMNH after 90 days.
Choose this formula →"I want the most thorough cellular coverage I can get."
Choose Liposomal NMN+NR. Recent research shows individual response to NAD+ precursors varies significantly between people. Stacking both removes the guesswork entirely and supports a wider range of tissues simultaneously, all in one daily protocol.
Choose this formula →"I've taken NAD+ supplements before. I want what's next."
Step up to Liposomal NMNH. The most potent NAD+ precursor available today. 98% purity, fastest NAD+ elevation, and deeper support for mitochondrial energy and DNA repair. This is where the most sophisticated longevity protocols are heading.
Choose this formula →Doctor Recommended
"I recommend GenuinePurity to my own patients."
Dr. Dave David
World-Renowned Surgeon
GenuinePurity® formulas are recommended by Dr. Dave David, world-renowned surgeon and frequent guest on national media including CNN, Fox News, NBC's Alive and Wellness, The Jenny Jones Show, and the Food Network.
Member Stories
From people who didn't expect it to work.
Average rating 4.9 out of 5 across thousands of verified members
"At the two week mark I felt re-energized and was pushing myself further at the gym. Six weeks in, I feel so much better than I have in years."
Active 67-year-old · NMN, 8 months
"I'm in my late 60s. Since starting, I've been more energetic, sleeping through the night, and concentrating for hours at a time. I'm thrilled."
NMNH member, 4 months
"I researched NAD+ supplements extensively before choosing this. The brain fog that plagued me for years has lifted significantly."
NMN+NR member, 6 months
Try any formula completely risk-free for 97 days.
If you don't feel a meaningful difference in your energy, focus, or how you wake up in the morning, send back the bottles, even the empty ones, and we will refund every dollar.
No questions. No fine print. No retention reps trying to talk you out of it.
Frequently Asked
Common Questions
Begin Today
The body you have at 70 depends on the choices you make at 50.
Every day you wait, more cellular ground is lost. Start the protocol matched to where you are now, with the protection of our 97-day money-back guarantee.
Choose Your FormulaFree shipping on $89+ · 97-day guarantee
