Natural Factors ECHINAMIDE Anti-Viral Potent Fresh Herbal Tincture harnesses the power of nature to help you fight viruses. A proprietary blend of clinically proven ECHINAMIDE with well-researched anti-viral herbs, this formula relieves symptoms and helps the immune system deliver a more potent viral-fighting punch.Medicinal IngredientsNon-Medicinal IngredientsPurified water, ethanol.Used in herbal medicine to help fight off infections, especially of the upper respiratory tract. Supportive therapy in the treatment of upper respiratory infections (e.g., common colds). Helps relieve the symptoms and shorten the duration of upper respiratory tract infections. ECHINAMIDE is the only phytomedicinal product containing standardized levels of Echinacea purpureaÕs three key active compounds. Two randomized, double-blind, placebo-controlled clinical studies clearly demonstrated that ECHINAMIDE reduces the duration and severity of upper respiratory infections. Use at the first sign of a viral infection.