Echinacea flower medicine for flu and cold. A conceptual still life photograph showing some green pill capsules containing herbal medicine powder made from the medicinal plant Echinacea flowers. Known to prevent and reduce the symptoms for influenza (flu) and colds. Taken with natural light grey linen cotton background, and with stone pebbles and green fern foliage on the side for a natural mood. Wooden blocks with letter spell out the word echinacea in upper case letters. Herbal medicine pharmaceutics health care concept image.