ResveraCel, produced by Thorne, contains nicotinamide riboside – a direct precursor to nicotinamide adenine dinucleotide (NAD+). It also contains Quercetin and and Resveratrol. The resveratrol in ReservaCel is trans-resveratrol – not a diluted plant extract found in many resveratrol products on the market. The quercetin in Thorne's quercetin phytosome is bound to sunflower-sourced phospholipids to help improve absorption.Thorne's logo, text, trademarks, graphics, videos and photo images are the property of Thorne and are used with permission. Copyright © 2023*FDA Disclaimer: The information about this product and statements made are provided by the manufacturer, except customer reviews which are not evaluated. See www.thorne.com for information about the relationship between this product and any claims made. Results may vary from person to person based on body size and other factors, and the effectiveness is not guaranteed for you. Always seek the advice of your healthcare professional about taking dietary, nutritional, herbal or homeopathic supplements.