A fat-soluble vitamin complex, its composition and content are perfect, especially in the winter season. I bought this because the role of fat-soluble vitamins A, D, and K is important for bone health and a strong immune system. It is a great product that can reduce the number of pills I want to take. The capsule is small and easy to swallow.
When I take this D3 complete, I notice my eyesight immediately gets better. I sit in front of a computer all day and if I pop in one of these pills at 10:00 (AM) I vision is much better than it usually is at 2:00! I'm sure its the vitamin A retinyl palmitate. It makes sense because its is my understanding that the body has to convert beta carotene to make vitamin A and a certain percentage of the population cannot do that. But, the animal source, retinyl palmitate does not need conversion.