Sometimes when a person doesn’t go outside much, eats a mainly plant-based diet, or has an allergy or intolerance to dairy, they can be deficient in certain vitamins, especially vitamin D3. But by incorporating more vitamin-rich foods or supplements like Jamieson Vitamins Vitamin D3 2500 IU Extra Strength, you can ensure that you are getting all the vitamins you need to maintain a healthy body. These tablets help to boost your vitamin D3 intake and to combat vitamin D deficiency. Take a convenient, easy-to-consume, tablet each day to maintain your vitamin D intake. Be sure when taking such a potent supplement, to cut it with a sufficient amount of calcium.