Liquid formulation of vitamin D, in the form D3 (cholecalciferol), which allows the rapid release of the active ingredient and its absorption in the body. The formulation vehicle for Vitamin D in the MARNYS® liquid vitamin D formulation is Extra-Virgin Olive Oil, providing less susceptibility to oxidation, which confers high stability. Vitamin D contributes to the normal maintenance of bones, teeth and muscle function. to normal bone growth and development in children, to the normal absorption and use of calcium and phosphorus, in addition to normal blood calcium levels. It helps the normal function of the immune system, including children, and participates in the cell division process. Instructions for use: Take 0.5 ml a day, preferably in the morning (the measurements are printed on the dropper). \ Place 0.5 ml of the dropper on a spoon to ingest it directly.