Why do we recommend BioTechUSA Vitamin D3 tablets? 50 µg (2000 IU) of vitamin D Economical package Easy dosage WHY IS VITAMIN D3 IMPORTANT? It is well known that the human body can replenish its vitamin D reserves through exposure to sunlight. Sun worshippers and tanning enthusiasts have a definite advantage when it comes to combating vitamin D deficiency. However, autumn and winter are periods when sunlight is very low, so even they need a vitamin D supplement. Foods that contain vitamin D include sea fish, cod liver oil, dairy products, and eggs. To supplement your vitamin D intake, BioTechUSA vitamin D3 tablets, which contain 2000 IU of vitamin D per unit, are an ideal choice. Vitamin D plays an important role in many physiological processes and contributes, among other things, to: the health of your teeth, bones, and muscles, the proper absorption/use of calcium and phosphorus by your body, the proper functioning of your immune system.BioTechUSA