Sorry, I misspelled it. It is Thuja, I got this from a natural pharmacy, but I've seen it at health food stores as well. The one I have is by Newton. Thuja is an herb. As far as the amount of zinc, my daughter was probably @ 12 and I gave her 50mg zinc/day.

By the way, I had taken her to have it frozen and the dr. used so much of the stuff that it got a hugh blister and when it did finally heal, the wart came back larger than ever! The me used the thuja and it went away completely. My other daughter has a wart on her toe, but she hasn't been faithful in taking the zinc and she didn't use the cream twice a day, so she still has her wart.
Hope this helps.