Natural Factors Echinamide Anti-Viral - A certified organic herbal tincture designed for both defense against acute viral attacks, and long-term immune support. Natural Factors Echinamide Anti-Viral combines Echinacea with the traditional anti-viral herbal extracts of Astragalus, Lomatium, Reishi, and Licorice to supercharge the immune system, and provide a more potent viral fighting punch. Safeguard and fortify your immune system naturally, and stay healthy all year long.