Hri cold flu echinacea is a traditional herbal medicinal product used to relieve the symptoms of colds and influenza flu type infections based on traditional use only take at first signs of a cold and help protect against winter colds and flu hri cold flu echinacea is a traditional herbal medicinal product used to relieve the symptoms of colds and influenza flu type infections based on traditional use only take at first signs of a cold and help protect against winter colds and flu