1. A composition consisting of trigonoside Ib and vicenin-1, optionally together with at least one excipient. 2. The composition according to claim 1, in which the concentration of trigoneoside Ib is in the range of from about 40 to 90 wt.%, And the concentration of vicenin-1 is in the range of from about 1 to 20 wt.%. 3. The composition of claim 1, wherein the trigoneoside Ib and vicenin-1 are obtained from a hay fenugreek plant (Trigonella foenum-graecum). The composition according to claim 1, in which the filler is selected from the group comprising granulating agents, binders, lubricants, disintegrants, sweeteners, colorants, flavoring agents, shelling agents, plasticizers, preservatives, suspending agents, emulsifiers, cellulosic material and spheronization agents or any combination thereof. 5. The composition according to claim 1, made up in the form of dosage forms selected from the group comprising tablet, capsule, troche, lozenges, cough, powder, syrup, solution, aerosol, suspension, dispersible powders or granules, emulsion in hard or soft capsules, syrups , elixirs, liniment, ointment, skin patch, phytoceutics, nutraceuticals and food products. 6. A method for preparing a composition consisting of trigoneoside Ib and vicenin-1, optionally with at least one filler, comprising the steps of: (a) obtaining flakes from fenugreek seeds, (b) extracting flakes of fenugreek seeds with a mixture of solvents, followed by filtration and concentration to obtain semi-solid mass, (c) dissolving the mass to obtain a clear solution, (d) countercurrent extraction of the clear solution with n-butanol to obtain a solution containing an aqueous layer and a layer of butanol, (e) prop1. Композиция, состоящая из тригонеозида Ib и виценина-1, при необходимости вместе по меньшей мере с одним наполнителем.2. Композиция по п.1, в которой концентрация тригонеозида Ib находится в диапазоне примерно от 40 до 90 мас.%, а концентрация виценина-1 находится в диапазоне примерно от 1 до 20
