Where to buy choline bitartrate?

I looked for choline bitartrate at CVS and Walgreens today but I didn't see it. Would Walmart have something like that? Or do I have to go to one of those hippie health food stores? I'd rather not buy in on the internet, it seems silly to buy something for 7 dollars on the internet if I could just go pick it up at a store.

Should be able to get it at Walgreens, why do you want it? I don't think it does anything for lucid dreaming.