Plaquenil and Vitamin D3 depletion

I found a blurb that said Plaquenil "eats" Vitamin D  (not quite in those unscientific terms, but I can't find the article again).

Has anyone read this or heard of it?

I know your post was from a while back, but I'm curious if you ever confirmed this?? I've been on plaquenil for a looonnngggg time and I'm also very D3 deficient. I always figured my D3 deficiency was because, as most adults I do not get enough sun, milk, etc. Now, after reading your post I'm wondering... 

It's been a while, and I' going to look for the exact article today.  When I find it, I will post a link if I can, or copy and paste, citing the source.