The #1 NAD+ supplement in the U.S.

When it comes to what we put in our bodies, we don't cut corners.

Every single batch is tested before it ever reaches you. That means rigorous internal quality checks plus independent third-party verification, covering purity, potency, and safety — including contaminant screening and potency analysis. We're talking 15+ tests on every batch, a standard well beyond what most of the industry holds itself to.

This isn't testing that happens once and gets forgotten. It happens every time a product is packed and shipped, so what you open is exactly what we promise: clean, potent, and safe.

Leep is a science-backed, nature-identical form of NR — the most efficient NAD+ precursor — and one of the most researched NAD+ boosters available, supported by 40+ human clinical studies. It's clinically shown to raise NAD+ levels, which support cellular energy, repair, and healthy aging.

If your NAD-boosting supplement isn't held to this kind of testing, it's worth asking what you're really taking.

That's why Leep has sold over 400,000 bottles in the U.S. — and why people take it daily.

The Science Behind NAD

The Biology

NAD+ is a coenzyme found in every cell, where it powers the mitochondria that produce your energy. NAD+ levels naturally decline with age — falling by roughly half between your 20s and 50s. As levels drop, cells have less of what they need to produce energy and repair themselves.

How This Helps

Leep NAD+ delivers NAD+ precursors through a Liposomal Matrix, which protects them from stomach acid so more reaches your cells intact. These precursors give the body the building blocks it needs to replenish NAD+ levels and support cellular energy & healthy aging.*

Key Ingredients:

Liposomal NAD+ Matrix

3 cellular actives delivered through a Liposomal Matrix for enhanced absorption.

NAD+ 500mg

The coenzyme that fuels mitochondrial energy production*

Quercetin Dihydrate 250mg

A senolytic flavonoid that helps clear aging cells*

Japanese Knotweed Extract 150mg

98% resveratrol — activates cellular longevity pathways*

WHY LEEP'S NAD?

We infused a massive, direct-yielding 500mg of pure, bio-identical NAD+ with clinically studied sirtuin activators and cellular "guard" nutrients to help you crush daily chronic fatigue, erase brain fog, and reclaim your physical bounce—all without letting a single milligram of your energy go to waste.

Most single-precursor brands (like Tru Niagen) only do half the job: they try to "fill your cellular fuel tank" with basic precursors, but they leave the drain wide open. LEEP NAD+ Cellular Reboot is a complete, triple-threat longevity stack designed to fill the tank, plug the metabolic leaks, and step on the gas pedal so you can stop just surviving and start actively thriving.

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Don't Just Take Our Word

SUPERCHARGE your power-cells

OVER 800,000 BOTTLES SOLD

#1 BEST SELLING IN USA

Most people notice clearer thinking and less brain fog within 48 hours. All-day energy without the 2PM crash improves in the first week. Deeper effects — better sleep, faster recovery, feeling younger — build over 30–90 days. Our guarantee is 90 days because we know it takes time and we're confident it works.

Mostly (ALL) NAD+ products just add NAD+ and call it done. That's like filling a bucket with a hole in it. After 40, CD38 (an enzyme in your body) aggressively destroys NAD+. Quercetin blocks CD38 — fixing the leak. Then Resveratrol activates your Sirtuins, making your cells more sensitive to the NAD+ that's now staying elevated. All three work together. It's the difference between adding fuel and rebuilding the engine.

An independent lab tested 100+ NAD+ supplements sold on Amazon in 2025 and found 76% failed their label claims — 57% contained almost no active ingredient. If you felt nothing, the product likely contained mostly filler. Every Leep batch is independently tested before it ships. We also include Quercetin to stop the NAD+ from being immediately destroyed — something virtually no other product does.

90 days to decide. If you don't feel measurably different — contact us for a full refund. No return shipping required. No awkward questions. No fine print. The guarantee is real.

Yes — anytime, one click, from your account. No phone call. No cancellation fee. No minimum commitment. You can also pause if you're traveling or stocked up.

Yes. Research has tested NAD+ at up to 2,000mg per day with minimal side effects. Leep contains 500mg per serving. Some people notice mild, temporary flushing in the first few days — normal, goes away on its own. 100% vegan, gluten-free, GMP certified USA facility. Consult your doctor if on prescription medication, pregnant, or nursing.