USP doesn't mean its Food Grade and Walmart describes it as for topical (not internal) use. Here is what USP means:
Code:
[url]http://www.e-cigarette-forum.com/forum/laboratory/10363-ask-mad-vaper-what-does-usp-mean.html[/url]
If it doesn't say Food Grade as, for instance, Capella's used in candy making and baking, I don't
vape it. But that's just me.
PS: You can get Food Grade a many grocers as well as craft stores like Hobby Lobby or Michaels where they carry candy making and cake decorating supplies.