http://www.medhelp.org/posts/Thyroid-Disorders/anyone-have-allergic-reaction-to-Vitamin-D/show/1050672
Apparently, a lot of people are allergic to wool/lanolin/D3 sourced from sheep's wool lanolin.
The newest (2014) are at the bottom of this long list. Their "allergy symptoms" are interesting to read.......although it does seem they took HUGE doses of it as prescribed by their doctors.
http://www.drfranklipman.com/vitamin-d-faq/
Vitamin D is really a hormone.
Right now I'm researching to see just how long it will take to get all of the D3 from sheep's wool lanolin out of my body.........second day without them. I'll
know when it's just the normal arthritic stiffness vs. the magnified stiffness after taking the D3.