Natrol Cognium keeps your mind sharp and your memory strong. Cognium features a silk protein hydrolysate that energizes and protects the brain. Imaging studies show it increases blood flow and glucose to the areas of the brain responsible for memory and cognition. It also acts like an antioxidant for the brain, protecting it from free radicals and oxidation that cause aging. Cognium is backed by 9 human clinical studies that show statistically significant improvements in memory and cognition in as little as four weeks. Results have been published in respected, peer-reviewed journals. Cognium is safe, natural and stimulant free. #1 most clinically studied ingredient - NINE human clinical studies Improves memory and concentration Safe, natural and stimulant free Results in as little as 4 weeks Support your brain with Cognium, the smart choice in brain health.