Vitamin D (also referred to as ?calciferol?) is a fat-soluble vitamin that is naturally present in a few foods, added to others, and available as a dietary supplement.It is also produced endogenously when ultraviolet (UV) rays from sunlight strike the skin and trigger vitamin D synthesis. This Supplement contains vitamin D, which allows calcium to be fixed in the bone and whose deficiency causes rickets. Vitamin D plays a major role in bone growth and mineralization. There are symptoms of lack of vitamin D. These symptoms are fatigue, muscle weakness, sometimes dry skin and cramps. All these symptoms reflect the action of vitamin D and in these cases, one can ask the question of knowing if one is lacking in vitamin D. Active substance: Cholecalciferol. Excipients : Refined olive oil, Sweet orange essence, Tocopherol. The drops of the solution can be taken pure or diluted in any drink, Do not put them in a hot liquid or heat them. The dosage is strictly individual. It depends on age, the intake of milk enriched or not with vitaminD, the presence of a disease of the digestive system. This Supplement should not be used in case of excess calcium in the blood and urine, with or without lithiasis . An overdose of vitamin D exposes to serious undesirable effects. This Supplement can be used in pregnant or breastfeeding women, but the dosage prescribed by the doctor should not be exceeded. Hypercalcemia during pregnancy could be harmful to the unborn child. Be careful not to take more than one vitamin D medication during pregnancy. ZYMAD 10,000 IU / ml: oral solution (orange flavor) 10 ml dropper bottle (333 drops). - Economy Shipping = No Tracking Number (Takes 11 - 23 Business Days) - Standard Shipping = Includes Tracking Number (Takes 5 - 10 Business Days) - All orders over 40 Dollars will automatically be shipped via Standard Shipping (5-10 days).