My vitamin D level had been low for 2 years and each time the Dr. gave me a prescription for synthetic vitamin D which I refused to take; way too many side effects. Thorne was recommended and we've been a match ever since.

Recommended by a friend after they'd used it with great success. If you don't mind your bowels changing color, give it a try.

Sometimes you don't think there is any difference happening in the body when you take a supplement until you stop taking it; that's how it was with this one.