Most people begin noticing improved energy consistency and recovery quality within 2–4 weeks of daily use. The cellular benefits — elevated NAD+ levels — actually begin within hours of your first dose, even before you feel a noticeable change.

Niagen® (nicotinamide riboside, or NR) is a highly bioavailable form of vitamin B3 that converts into NAD+ inside your cells more efficiently than other precursors like NMN, niacin, or niacinamide. It's the patented, research-grade ingredient featured in over 65% of all global clinical trials on nicotinamide riboside — meaning it's what scientists reach for when they need reliable results.

Yes. Tru Niagen is NSF Certified for Sport, meaning every batch is independently third-party tested for banned substances, potency, and purity. It is safe to consume up to 2,000mg per day and has been used safely in clinical trials at those levels.

NAD+ is the coenzyme that powers your mitochondria — the energy factories inside your muscle cells. It fuels ATP production, cellular repair, and metabolic efficiency. NAD+ levels naturally decline by up to 50% by middle age, and intense training accelerates that depletion. Replenishing NAD+ helps your body keep up with the demands of consistent training.