Vitamin D is an incredibly powerful vitamin that most people, especially in northern tier areas, lack. The science of today continues to reveal the benefits of having healthy Vitamin D levels. Vitamin D has been shown to support the improvement of immune systems and even many diseases like MS, Parkinsion's, Alzheimers, heart disease and even cancer. This product has 5000 IU's of Vitamin D per tablet. Why? Quite often lesser amounts just aren't enough to have any noticable impact yet 5000 is still a very safe amount to use. My Vitamin D is lab tested for purity and I highly recommend this product especially when you can't get Vitamin D from the sun. 60 capsules gets you 2 months of use so buy today! Shipping included in the price! Save $4 by picking up at Zero Point Fitness!