For Heart and Healthy Aging. Suitable for Vegetarians. Resveratrol is a compound produced by grapes and other plants for protection from environmental stresses. Recent studies have demonstrated that resveratrol activates SIRT 1 genes which mimic the health aging benefits of caloric restriction. Source Naturals resveratrol may support heart health by providing the antioxidant protection needed for healthy circulation and by inhibiting inflammation messengers including NF kappa B.