Science-Based Nutrition Helps Improve Energy Stamina and Vitality Dietary Supplement Non-GMO - Gluten-Free - Soy Free - VeganDoctor's Best Ultra Cordyceps contains pure cultivated Cordyceps sinensis, an herb used for centuries in China as a rejuvenating tonic that improves energy and support function of various organs and system. The strains of Cordyceps in this product is recognized by the Chinese government as similar to wild Cordyceps sinensis, a rare fungus that grows above 15,000 feet in the Tibetan Highlands regions of China. Helps boost energy and improves general vitality Helps support lung health Helps support liver function