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.