September 14, 2013: Tiny softgel, easy to swallow and digest. Made with cold pressed olive oil. Omits allergens. It is my understanding that Low vitamin D is implicated in a variety of cancers and is important for calcium absorption and preventing osteoporosis. Many nutritional experts recommend people who do not spend a lot of time in the sun should take and can safely take at least 5000 units per day. Note the amount of this vitamin present in your other supplements and adjust your intake accordingly. Your doctor can check your vitamin D level. I take it in divided doses with calcium 3x day. Happy with this product. Update: June 3, 2015. I have had to stop taking this product for now because I developed symptoms of vitamin D toxicity, as was verified by my doctor checking my vitamin D level. Make sure you check the vitamin D levels in ALL the supplements you take, including those you drink, which I failed to do. Also, the 5000 units recommended by some nutritional experts does not apply to everyone and appears to be too much for me.