Go natural with Rainbow Light Bry Dlicous Gmy 2500 (1x50 CT). Vitamin D is often referred to as "the sunshine vitamin" because we can synthesize it with exposure to sunlight. However, sunscreen use, environmental factors, age and diet may contribute to vitamin D deficiencies. In addition, current scientific research reveals significant health benefits from higher, optimal potencies. Berry-D-Licious 2,500 IU Vitamin D3 makes it easy to get optimal-potency vitamin D protection every day.. (Note: Description is informational only. Please read the ingredient label on the product for more information and always consult your health professional with any questions prior to use.)