What is Echinacea Extract? Echinacea Extract is an extremely popular nutrient for boosting immune function. Intense training can actually suppress the immune system, so BULK POWDERS™ brings you a high quality Echinacea Extract to use during periods of intense training or when you’re feeling ‘run down.’ In years gone by Echinacea was primarily used to treat bites & infections, however it is now best known as a remedy to illness due to its well-documented immune boosting