The Adya Clarity (AC) is Made in USA. Also, granted a patent in 1988 which possesses an U.S. patent number: 4,776,963.
You may also read more about the technology by visiting the link: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/PTO/srchnum.htm&r=1&f=G&l=50&s1=4,776,963.PN.&OS=PN/4,776,963&RS=PN/4,776,963
AC is also approved/licensed/registered under Health Canada as Adya Minerals (special name), but made with the same exact ingredients. The Natural Product Number (NPN) is 80028256, but another Natural Health Product (NHP) would be for the raw material (Themarox®) - producing Adya Clarity® which is 10 times strong.