The invention refers to a process for production of Echinacea purpureas extract with high amount of different active substances. The Echinacea purpurea plants from which extract is made are harvested by special technology process, said extract is produced by combined extraction process where parts of plants are extracted with ethanol or water-ethanol solvent and part of plants with water solvent. When both extracts are combined, said extract comprises all three groups of active substances (caffeic acid derivatives, alcamides, heteroglycan polysaccharides) which are responsible for immunostimulant activity.Predmet izuma je postopek pridelave ekstrakta iz škrlatnega ameriškega slamnika (AS), z visoko vsebnostjo različnih učinkovin. Rastline AS iz katerih naredimo ekstrakt so pridelane po posebnem tehnološkem postopku, ekstrakt pa je pridobljen po kombiniranem postopku ekstrakcije, pri katerem del rastlin ekstrahiramo z etanolom oziroma vodno-etanolnim topilom, del rastlin pa ekstrahiramo z vodnim topilom. Ko oba ekstrakta združimo, vsebuje ekstrakt vse tri skupine učinkovin (derivati kavne kisline, alkamidi, heteroglikanski polisaharidi), ki so pomembni za njegovo imunostimulativno delovanje.