The invention concerns a high water soluble product, containing a dehydrated material, obtained by fermenting wheat germ in aqueous medium in the presence of microorganisms of the Saccharomyces genus, forming amorphous crystal structure with inert auxiliary materials), commonly used in preparation of drugs. The invention also relates to the production process of said products, to immunostimulatory, immunomodulatory, antitumor and cardiovaskular pharmaceutical preparations containing them, and to the therapeutic methods for their use.