1. Application vitsenina-2 or biologically active analogue as active ingredient in order to maintain and / or improve neurological function and / or function of the brain and / or preventing, delaying the onset of, regulation and / or treatment of neurological dysfunctions, condition, disorder or disease .2. Use according to claim. 1 as an active ingredient, to maintain and / or improve neurological function and / or brain mozga.3 function. Use according to Claim. 1, wherein the neurological dysfunction, condition, disorder or disease is an age-related neurological dysfunction or stress, anxiety, cognitive disorder, dementia or depression, wherein dementia is preferably Altsgeymera.4 disease. Use according to Claim. 1, wherein the active ingredient derived from rasteniya.5. Use according to claim. 4, wherein the active ingredient is part of the vegetable preparation enriched active ingredientom.6. Use according to claim. 4, wherein the plant is selected from one or more plants from the group consisting of Anethum, Perilla, Urtica, Passiflora, Camellia, Cayaponia, Cydonia, Colocasia, Desmodium, Hordeum, Origanum, Ocimum, Jatropha, Parkinsonia, Peperomia, Piheranthos , Centaurea, indigo, Bomba, Lychnophera, Asplenium, Chinotto, Citrus, Viola, Trigonella, rosemary, peppermint, thyme, basil, sage, oregano, Lavandula, Nipponanthemum, Abrus, Viola, Santalum, Oryza, Scleropyrum, tulsi, Centaurea, Indigofera, Bombax, Glinus, Lychnophora, other species belonging to Lamiacea, Labiatae and Urticaceae, Rosales or Malpighiales, or kombinatsiy.7. Use according to Claim. 1, wherein the active ingredient derived from vegetable preparation selected from the group consisting of a drug from the leaves of the fruit preparation, a preparation of seeds from the stalks, etc. preparation1. Применение виценина-2 или его биологически активного аналога в качестве активного ингредиента для поддержания и/или улучшения неврологической функции и/или функции головного мозга и/или предупреждения, з