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Healthy Aging500 mg Per CapsuleStandardizedHerbal SupplementVegetarianTotal Wellness for Mind Body & HomeUnsurpassed Purity & PotencyScience-Backed Quality Since 1969Regarded as one of the most powerful healthy-aging herbs in the world Fo-Ti is currently being researched for its potential benefits on nerve function and cognition. These studies focus on the active component THSG (tetrahydroxystilbene-glucoside) which appears to protect the delicate structure of neurons. Researchers believe this action may help defend the brain to help preserve our capacity for learning and memory. Swanson Superior Herbs Fo-Ti Extract is standardized to a minimum 2% THSG content for guaranteed potency.