Elysium Basis was first formulated using Niagen® and pTeroPure®, a form of pterostilbene. They have since changed their ingredient sources. Tru Niagen® contains the only patented source of nicotinamide riboside that has twice been successfully reviewed under the FDA’s new dietary ingredient (NDI) notification program and has also been successfully notified to the FDA as generally recognized as safe (GRAS).