Jarrow Formulas trans-Pterostilbene supports cardiovascular and neurologic health. Sirtuin activatior and calorie restriction mimetic. 100% natural trans-Pterostilbene extracted from the heart wood of Pterocarpus marsupium. Pterostilbene is a methylated form of resveratrol, with greater uptake and metabolic stability in the body. Trans-Pterostilbene is a calorie-restriction mimetic that activates the sirtuin pathway. Recommended Use: Adults take 1 capsule once a day or as directed by your qualified healthcare professional. Jarrow Formulas trans-Pterostilbene Facts: 1 capsule contains: trans-Pterostilbene (from 56mg of Pterocarpus marsupium, Vijayasar)(Wood) 50 mg Other Ingredients: Microcrystalline Cellulose, capsule (hydroxypropylmethylcellulose, water), silicon dioxide and magnesium stearate (vegetable source). No Major Allergens.