Tinctures made with grain alcohol and celiac...

Well, I'm super excited about the echinacea, but I'm a little concerned about the alcohol. I'm pretty sure that I'm celiac. Could I make a tincture with potato vodka instead? I'd love to get some from Uny but I'm not feeling like doing grain alcohol would be safe for me.

Also, alcohol makes me really sick. I seem to remember Dr schultz mentioning something about how to get rid of the alcohol in a tincture but I can't remember what that was. Do you know?

Also, does Uny have echinacea tincture that's gluten free?