Dietary supplement, wich contains mixture of maximum 99,999975 % by weight of whole freeze-dried fruit of cranberry (Vaccinium macrocarpon) and/or juice thereof, and/or dry juice thereof, and/or extracts thereof and 0,00000025 to 0,0694 % by weight of vitamin D in the form of ergocalciferol D2 or cholecalciferol D3, or mixture of D2/D3, like active principle. The active principle can be mixed untill with 1000-fold amount of physiological safe vehiculum, eventually can be supplemented by adjuvants, when safe vehiculum is selected from at least one of softening agent or solvent or carrier and/or various variants of mixtures thereof and when eventually supplemented adjuvants are selected from at least one of colloid agents or antioxidants or colouring agents or stabilizers or emulgators or film formers and/or various variants of mixtures thereof.Dietary supplement, wich contains mixture of maximum 99,999975 % by weight of whole freeze-dried fruit of cranberry (Vaccinium macrocarpon) and/or juice thereof, and/or dry juice thereof, and/or extracts thereof and 0,00000025 to 0,0694 % by weight of vitamin D in the form of ergocalciferol D2 or cholecalciferol D3, or mixture of D2/D3, like active principle. The active principle can be mixed untill with 1000-fold amount of physiological safe vehiculum, eventually can be supplemented by adjuvants, when safe vehiculum is selected from at least one of softening agent or solvent or carrier and/or various variants of mixtures thereof and when eventually supplemented adjuvants are selected from at least one of colloid agents or antioxidants or colouring agents or stabilizers or emulgators or film formers and/or various variants of mixtures thereof.