Nicotinamide Riboside (Elysium) – 250 mg/day Basis is a proprietary formulation of crystalline NR and pterostilbene that supports cellular health by increasing and sustaining NAD+ . Elysium Basis is the only NR supplement that has run gold-standard clinical trials, owns their own supply chain (which means metals, other molecules, etc don’t get in your supplement), and they continuously test the product for stability long after it hits the “shelf.”