I kinda wish I did. Take fish oil, I mean. I cannot get past the idea of...fish...oil. That some fish died so I could swallow it's body oil. *pukola*
I take biotin, which makes my hair and nails thrive, despite the myriad of fun things I do to it/them. I've taken multi-vits...taken B's...honestly, never noticed anything positive or negative. Wish I could say I did.
Maybe I'm spoiled by psych meds in that they're action is so noticeable, so obvious. I love the line in Drugstore Cowboy...something about...Most people don't know how they're gonna feel from one moment to the next. But a pill-popper has a pretty good idea. All you gotta do is look at the labels on the little bottles.