1. An infusion having high ameliorating effect and a medical action based on a plant raw material, characterized in that contains AVENA SATIVA L. of milky ripeness as the plant raw material. 2. A preparation having high ameliorating effect a and medical action based on the plant raw material water-alcohol extraction, characterized in that contains extractive agents, obtained by water-alcohol extraction of AVENA SATIVA L. of milky ripeness, and 20-70% ethyl alcohol with the following ratio of components, % by weight: extractive agents AVENA SATIVA L. of milky ripeness0,1-15 20-70% ethyl alcoholremaining 3. A preparation having high ameliorating effect a and medical action based on the plant raw material water-alcohol extraction, characterized in that contains extractive agents, obtained by water-alcohol extraction of AVENA SATIVA L. of milky ripeness, and water with the following ratio of components, % by weight: extractive agents AVENA SATIVA L. of milky ripeness0,1-15 waterremaining 4. A process for obtaining a preparation having high amelioration effect and a medical action containing extraction of a plant raw material, characterized in that contains AVENA SATIVA L. of milky ripeness as the plant raw material, and extraction is carried out by 20-75% ethyl alcohol. 5. The process as claimed in claim 4, characterized in that newly-mowed or dried panicles of leafs and stems of AVENA SATIVA L. of milky ripeness up to 20 cm long. 6. The process as claimed in claim 5, characterized in that the extraction is carried out by percolation or maceration. 7. The process as claimed in claim 4 and 5, characterized in that the extraction is carried out during 1-168 hours. 8. The process as claimed in claim 7, characterized in that the extract is clarified at a temperature of 5-15 degree C during 24-120 hours in dark. 9. The process as claimed in claims 4 to 7, characterized in that the extract is thickened to a concentration of 5-30% of air-dried materials. 10. The process as claimed in claim 9, characterized in that the concentrate of extract is dried.
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