D3 and a little bonus magnesium!
I take vitamin D3 as a supplement year-round, and this one has a high dose in an easy to take format, with a little bonus magnesium to boot. I'll probably reserve this for regular use in the winter, when I'm not able to get outside with exposed skin to soak up some sun and help my body make its own D3, and it could use the extra assistance.
Rating: 5 stars