For the maintenance of the immune system All horses sometimes need a little extra help, particularly those working hard, travelling regularly or facing a particular challenge. Echinacea is perhaps the best known herb for support of the immune system. Research shows that echinacea also support the health of red blood cells, essential for competition horses. Echinacea Liquid provides the ideal day-to-day support of the immune system. For optimum, concentrated immune support see Immuforte Powder.