Because of the fact that this vitamin is soluble in fat, it is recommended to take it with a meal containing fatty products for more efficient assimilability.
It seems especially beneficial to take the supplement in the fall-winter season, because of the weaker natural production and the possibility of lowering the frequency of colds, however, there are no contraindications to use a prophylactic dose all year round.
For prophylactic purposes, it is best to use a daily dose of 1000-2000IU, while in case of deeper deficits and health problems that may result from vitamin D deficits, the recommended dose is 4000 IU and more.
Since vitamin D is accumulated in the organism, there is a possibility of taking appropriately high dose once a week.
Vitamin D belongs to fat soluble vitamins, occurs in three forms: calciferol (vitamin D1) ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3), it is formed under the action of sunlight for at least 15 minutes per day. In the absence of sunlight it should be administered in the diet in the form of fish oil (Vitamin A + D3) and fish oils. It is responsible for the absorption of calcium and phosphorus. It is the building substance of bone tissue particularly necessary during pregnancy, childhood, and for athletes. It is a component of dietary supplements and nutrients among competetive athletes. Deficiency of vitamin D causes children growth inhibition, and rickets.
For adults - deficiency causes osteomalacia.
Excess of vitamin D causes headaches, alopecia, nausea, drowsiness, blurred vision, pain in the long bones, the deposition of calcium deposits.
Dosage: 400 IU units during the day.